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<div class="title">test_decoherence.cpp</div> </div>
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<a href="test__decoherence_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>  </div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#include "catch.hpp"</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="preprocessor">#include "<a class="code" href="QuEST_8h.html">QuEST.h</a>"</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor">#include "<a class="code" href="utilities_8hpp.html">utilities.hpp</a>"</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include <random></span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>  </div>
<div class="line"><a name="l00009"></a><span class="lineno"><a class="line" href="test__decoherence_8cpp.html#ae828ab685c6e8b0cec317b7a6c46963a"> 9</a></span> <span class="preprocessor">#define PREPARE_TEST(qureg, ref) \</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor"> Qureg qureg = createDensityQureg(NUM_QUBITS, QUEST_ENV); \</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor"> initDebugState(qureg); \</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor"> QMatrix ref = toQMatrix(qureg);</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  </div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">/* allows concise use of Contains in catch's REQUIRE_THROWS_WITH */</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">using</span> Catch::Matchers::Contains;</div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  </div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  </div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  </div>
<div class="line"><a name="l00023"></a><span class="lineno"><a class="line" href="group__unittest.html#ga6b6a9b1ee734f0ab27cbfbb575bc7b77"> 23</a></span> <a class="code" href="group__unittest.html#ga6b6a9b1ee734f0ab27cbfbb575bc7b77">TEST_CASE</a>( <span class="stringliteral">"mixDamping"</span>, <span class="stringliteral">"[decoherence]"</span> ) {</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  </div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <a class="code" href="test__decoherence_8cpp.html#ae828ab685c6e8b0cec317b7a6c46963a">PREPARE_TEST</a>(qureg, ref);</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  </div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  SECTION( <span class="stringliteral">"correctness"</span> ) {</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  </div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="keywordtype">int</span> target = GENERATE( range(0,<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>) );</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> prob = <a class="code" href="group__testutilities.html#gacd5aadbe10ecdedaa625f85171c0a3cd">getRandomReal</a>(0, 1);</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <a class="code" href="group__decoherence.html#ga3e39405eb2ce05ce4bb88c0f00dace45">mixDamping</a>(qureg, target, prob);</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  </div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="comment">// ref -> kraus0 ref kraus0^dagger + kraus1 ref kraus1^dagger</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> kraus0{{1,0},{0,sqrt(1-prob)}};</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> rho0 = ref;</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <a class="code" href="group__testutilities.html#ga731c2de4d491629d806a03e0aea2f3a3">applyReferenceOp</a>(rho0, target, kraus0);</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> kraus1{{0,sqrt(prob)},{0,0}};</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> rho1 = ref;</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <a class="code" href="group__testutilities.html#ga731c2de4d491629d806a03e0aea2f3a3">applyReferenceOp</a>(rho1, target, kraus1);</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  ref = rho0 + rho1;</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  </div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  REQUIRE( <a class="code" href="group__testutilities.html#ga45cc399adad2e2a67b0124851189fae5">areEqual</a>(qureg, ref) );</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  }</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  SECTION( <span class="stringliteral">"validation "</span>) {</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  </div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  SECTION( <span class="stringliteral">"qubit index"</span> ) {</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  </div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordtype">int</span> target = GENERATE( -1, <a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a> );</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga3e39405eb2ce05ce4bb88c0f00dace45">mixDamping</a>(qureg, target, 0), Contains(<span class="stringliteral">"Invalid target"</span>) );</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  </div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  }</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  SECTION( <span class="stringliteral">"probability"</span> ) {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  </div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga3e39405eb2ce05ce4bb88c0f00dace45">mixDamping</a>(qureg, 0, -.1), Contains(<span class="stringliteral">"Probabilities"</span>) );</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga3e39405eb2ce05ce4bb88c0f00dace45">mixDamping</a>(qureg, 0, 1.1), Contains(<span class="stringliteral">"Probabilities"</span>) );</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  }</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  SECTION( <span class="stringliteral">"density-matrix"</span> ) {</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  </div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <a class="code" href="structQureg.html">Qureg</a> vec = <a class="code" href="group__type.html#ga3392816c0643414165c2f5caeec17df0">createQureg</a>(<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga3e39405eb2ce05ce4bb88c0f00dace45">mixDamping</a>(vec, 0, 0), Contains(<span class="stringliteral">"density matrices"</span>) );</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(vec, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  }</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  }</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(qureg, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> }</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  </div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  </div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  </div>
<div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="group__unittest.html#ga3c9d9dcf1fb89d6a95ec46fbdc2a6efa"> 73</a></span> <a class="code" href="group__unittest.html#ga6b6a9b1ee734f0ab27cbfbb575bc7b77">TEST_CASE</a>( <span class="stringliteral">"mixDensityMatrix"</span>, <span class="stringliteral">"[decoherence]"</span> ) {</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  </div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <a class="code" href="structQureg.html">Qureg</a> qureg1 = <a class="code" href="group__type.html#ga93e55b6650b408abb30a1d4a8bce757c">createDensityQureg</a>(<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <a class="code" href="structQureg.html">Qureg</a> qureg2 = <a class="code" href="group__type.html#ga93e55b6650b408abb30a1d4a8bce757c">createDensityQureg</a>(<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <a class="code" href="group__debug.html#gaa696c94112e5fbbc996af10dfc4e2c1c">initDebugState</a>(qureg1);</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <a class="code" href="group__debug.html#gaa696c94112e5fbbc996af10dfc4e2c1c">initDebugState</a>(qureg2);</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> ref1 = <a class="code" href="group__testutilities.html#ga253946523907014c4f198d2bb38d4913">toQMatrix</a>(qureg1);</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> ref2 = <a class="code" href="group__testutilities.html#ga253946523907014c4f198d2bb38d4913">toQMatrix</a>(qureg2);</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  </div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  SECTION( <span class="stringliteral">"correctness"</span> ) {</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">// test p in {0, 1} and 10 random values in (0,1)</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> prob = GENERATE( 0., 1., take(10, random(0.,1.)) );</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <a class="code" href="group__decoherence.html#ga97d563fa8f4bc51f720bbb653f5480b3">mixDensityMatrix</a>(qureg1, prob, qureg2);</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  </div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="comment">// ensure target qureg modified correctly</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  ref1 = (1-prob)*ref1 + (prob)*ref2;</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  REQUIRE( <a class="code" href="group__testutilities.html#ga45cc399adad2e2a67b0124851189fae5">areEqual</a>(qureg1, ref1) );</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  </div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="comment">// enure other qureg was not modified</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  REQUIRE( <a class="code" href="group__testutilities.html#ga45cc399adad2e2a67b0124851189fae5">areEqual</a>(qureg2, ref2) );</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  }</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  SECTION( <span class="stringliteral">"input validation"</span> ) {</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  </div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  SECTION( <span class="stringliteral">"probabilities"</span>) {</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  </div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> prob = GENERATE( -0.1, 1.1 );</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga97d563fa8f4bc51f720bbb653f5480b3">mixDensityMatrix</a>(qureg1, prob, qureg2), Contains(<span class="stringliteral">"Probabilities"</span>) );</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  }</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  SECTION( <span class="stringliteral">"density matrices"</span> ) {</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  </div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="comment">// one is statevec </span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <a class="code" href="structQureg.html">Qureg</a> state1 = <a class="code" href="group__type.html#ga3392816c0643414165c2f5caeec17df0">createQureg</a>(qureg1.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga97d563fa8f4bc51f720bbb653f5480b3">mixDensityMatrix</a>(qureg1, 0, state1), Contains(<span class="stringliteral">"density matrices"</span>) );</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga97d563fa8f4bc51f720bbb653f5480b3">mixDensityMatrix</a>(state1, 0, qureg1), Contains(<span class="stringliteral">"density matrices"</span>) );</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  </div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="comment">// both are statevec</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <a class="code" href="structQureg.html">Qureg</a> state2 = <a class="code" href="group__type.html#ga3392816c0643414165c2f5caeec17df0">createQureg</a>(qureg1.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga97d563fa8f4bc51f720bbb653f5480b3">mixDensityMatrix</a>(state1, 0, state2), Contains(<span class="stringliteral">"density matrices"</span>) );</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  </div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(state1, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(state2, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  }</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  SECTION( <span class="stringliteral">"matching dimensions"</span> ) {</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  </div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <a class="code" href="structQureg.html">Qureg</a> qureg3 = <a class="code" href="group__type.html#ga93e55b6650b408abb30a1d4a8bce757c">createDensityQureg</a>(1 + qureg1.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga97d563fa8f4bc51f720bbb653f5480b3">mixDensityMatrix</a>(qureg1, 0, qureg3), Contains(<span class="stringliteral">"Dimensions"</span>) );</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga97d563fa8f4bc51f720bbb653f5480b3">mixDensityMatrix</a>(qureg3, 0, qureg1), Contains(<span class="stringliteral">"Dimensions"</span>) );</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(qureg3, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  }</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  }</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(qureg1, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(qureg2, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> }</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  </div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  </div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  </div>
<div class="line"><a name="l00134"></a><span class="lineno"><a class="line" href="group__unittest.html#ga9c424dd4c51660f7a609a2937cc71fbb"> 134</a></span> <a class="code" href="group__unittest.html#ga6b6a9b1ee734f0ab27cbfbb575bc7b77">TEST_CASE</a>( <span class="stringliteral">"mixDephasing"</span>, <span class="stringliteral">"[decoherence]"</span> ) {</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  </div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <a class="code" href="test__decoherence_8cpp.html#ae828ab685c6e8b0cec317b7a6c46963a">PREPARE_TEST</a>(qureg, ref);</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  </div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  SECTION( <span class="stringliteral">"correctness "</span> ) {</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  </div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordtype">int</span> target = GENERATE( range(0,<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>) );</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> prob = <a class="code" href="group__testutilities.html#gacd5aadbe10ecdedaa625f85171c0a3cd">getRandomReal</a>(0, 1/2.);</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <a class="code" href="group__decoherence.html#ga91edd6320f517810a58afd4b845edf12">mixDephasing</a>(qureg, target, prob);</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="comment">// ref -> (1 - prob) ref + prob Z ref Z</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> phaseRef = ref;</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <a class="code" href="group__testutilities.html#ga731c2de4d491629d806a03e0aea2f3a3">applyReferenceOp</a>(phaseRef, target, <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a>{{1,0},{0,-1}}); <span class="comment">// Z ref Z</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  ref = ((1 - prob) * ref) + (prob * phaseRef);</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  </div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  REQUIRE( <a class="code" href="group__testutilities.html#ga45cc399adad2e2a67b0124851189fae5">areEqual</a>(qureg, ref) );</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  }</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  SECTION( <span class="stringliteral">"validation "</span>) {</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  </div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  SECTION( <span class="stringliteral">"qubit index"</span> ) {</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  </div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordtype">int</span> target = GENERATE( -1, <a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a> );</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga91edd6320f517810a58afd4b845edf12">mixDephasing</a>(qureg, target, 0), Contains(<span class="stringliteral">"Invalid target"</span>) );</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  </div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  }</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  SECTION( <span class="stringliteral">"probability"</span> ) {</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  </div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga91edd6320f517810a58afd4b845edf12">mixDephasing</a>(qureg, 0, -.1), Contains(<span class="stringliteral">"Probabilities"</span>) );</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga91edd6320f517810a58afd4b845edf12">mixDephasing</a>(qureg, 0, .6), Contains(<span class="stringliteral">"probability"</span>) && Contains(<span class="stringliteral">"cannot exceed 1/2"</span>) );</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  }</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  SECTION( <span class="stringliteral">"density-matrix"</span> ) {</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  </div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <a class="code" href="structQureg.html">Qureg</a> vec = <a class="code" href="group__type.html#ga3392816c0643414165c2f5caeec17df0">createQureg</a>(<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga91edd6320f517810a58afd4b845edf12">mixDephasing</a>(vec, 0, 0), Contains(<span class="stringliteral">"density matrices"</span>) );</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(vec, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  }</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  }</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(qureg, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> }</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  </div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  </div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  </div>
<div class="line"><a name="l00180"></a><span class="lineno"><a class="line" href="group__unittest.html#gae4e453a9c519926b39e3c45a6b1402d2"> 180</a></span> <a class="code" href="group__unittest.html#ga6b6a9b1ee734f0ab27cbfbb575bc7b77">TEST_CASE</a>( <span class="stringliteral">"mixDepolarising"</span>, <span class="stringliteral">"[decoherence]"</span> ) {</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  </div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <a class="code" href="test__decoherence_8cpp.html#ae828ab685c6e8b0cec317b7a6c46963a">PREPARE_TEST</a>(qureg, ref);</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  </div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  SECTION( <span class="stringliteral">"correctness "</span> ) {</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  </div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="keywordtype">int</span> target = GENERATE( range(0,<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>) );</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> prob = <a class="code" href="group__testutilities.html#gacd5aadbe10ecdedaa625f85171c0a3cd">getRandomReal</a>(0, 3/4.);</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <a class="code" href="group__decoherence.html#ga556fe013915bca4626367d98db948f5e">mixDepolarising</a>(qureg, target, prob);</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  </div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> xRef = ref;</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <a class="code" href="group__testutilities.html#ga731c2de4d491629d806a03e0aea2f3a3">applyReferenceOp</a>(xRef, target, <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a>{{0,1},{1,0}}); <span class="comment">// X ref X</span></div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> yRef = ref;</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <a class="code" href="group__testutilities.html#ga731c2de4d491629d806a03e0aea2f3a3">applyReferenceOp</a>(yRef, target, <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a>{{0,-1i},{1i,0}}); <span class="comment">// Y ref Y</span></div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> zRef = ref;</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <a class="code" href="group__testutilities.html#ga731c2de4d491629d806a03e0aea2f3a3">applyReferenceOp</a>(zRef, target, <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a>{{1,0},{0,-1}}); <span class="comment">// Z ref Z</span></div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  ref = ((1 - prob) * ref) + ((prob/3.) * ( xRef + yRef + zRef));</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  </div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  REQUIRE( <a class="code" href="group__testutilities.html#ga45cc399adad2e2a67b0124851189fae5">areEqual</a>(qureg, ref) );</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  }</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  SECTION( <span class="stringliteral">"validation "</span>) {</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  </div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  SECTION( <span class="stringliteral">"qubit index"</span> ) {</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  </div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordtype">int</span> target = GENERATE( -1, <a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a> );</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga556fe013915bca4626367d98db948f5e">mixDepolarising</a>(qureg, target, 0), Contains(<span class="stringliteral">"Invalid target"</span>) );</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  </div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  }</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  SECTION( <span class="stringliteral">"probability"</span> ) {</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  </div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga556fe013915bca4626367d98db948f5e">mixDepolarising</a>(qureg, 0, -.1), Contains(<span class="stringliteral">"Probabilities"</span>) );</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga556fe013915bca4626367d98db948f5e">mixDepolarising</a>(qureg, 0, .76), Contains(<span class="stringliteral">"probability"</span>) && Contains(<span class="stringliteral">"cannot exceed 3/4"</span>) );</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  }</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  SECTION( <span class="stringliteral">"density-matrix"</span> ) {</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  </div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <a class="code" href="structQureg.html">Qureg</a> vec = <a class="code" href="group__type.html#ga3392816c0643414165c2f5caeec17df0">createQureg</a>(<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga556fe013915bca4626367d98db948f5e">mixDepolarising</a>(vec, 0, 0), Contains(<span class="stringliteral">"density matrices"</span>) );</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(vec, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  }</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  }</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(qureg, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> }</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  </div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  </div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  </div>
<div class="line"><a name="l00229"></a><span class="lineno"><a class="line" href="group__unittest.html#gaec7d511066d9bb4da613fb06d5ce8e22"> 229</a></span> <a class="code" href="group__unittest.html#ga6b6a9b1ee734f0ab27cbfbb575bc7b77">TEST_CASE</a>( <span class="stringliteral">"mixMultiQubitKrausMap"</span>, <span class="stringliteral">"[decoherence]"</span> ) {</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  </div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <a class="code" href="test__decoherence_8cpp.html#ae828ab685c6e8b0cec317b7a6c46963a">PREPARE_TEST</a>(qureg, ref);</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  </div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="comment">// figure out max-num (inclusive) targs allowed by hardware backend</span></div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="comment">// (each node must contain as 2^(2*numTargs) amps)</span></div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordtype">int</span> maxNumTargs = <a class="code" href="group__testutilities.html#ga267884197cf7f1d428021cb12a57360c">calcLog2</a>(qureg.numAmpsPerChunk) / 2;</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  </div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  SECTION( <span class="stringliteral">"correctness"</span> ) {</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  </div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="comment">/* note that this function incurs a stack overhead when numTargs < 4,</span></div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> <span class="comment"> * and a heap overhead when numTargs >= 4</span></div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  </div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="keywordtype">int</span> numTargs = GENERATE_COPY( range(1,maxNumTargs+1) ); <span class="comment">// inclusive upper bound</span></div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  </div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="comment">// note this is very expensive to try every arrangement (2 min runtime for numTargs=5 alone)</span></div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keywordtype">int</span>* targs = GENERATE_COPY( <a class="code" href="group__testutilities.html#ga35add15146aa606b256df79334b867d5">sublists</a>(range(0,<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>), numTargs) );</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  </div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="comment">// try the min and max number of operators, and 2 random numbers </span></div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="comment">// (there are way too many to try all!)</span></div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordtype">int</span> maxNumOps = (2*numTargs)*(2*numTargs);</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keywordtype">int</span> numOps = GENERATE_COPY( 1, maxNumOps, take(2,random(1,maxNumOps)) );</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  </div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="comment">// use a new random map</span></div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  std::vector<QMatrix> matrs = <a class="code" href="group__testutilities.html#ga0d3b30625e2350a1e837a0b259dd3b18">getRandomKrausMap</a>(numTargs, numOps);</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  </div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="comment">// create map in QuEST datatypes</span></div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <a class="code" href="structComplexMatrixN.html">ComplexMatrixN</a> ops[numOps];</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numOps; i++) {</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  ops[i] = <a class="code" href="group__type.html#ga815103261fb22ea9690e1427571df00e">createComplexMatrixN</a>(numTargs);</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <a class="code" href="group__testutilities.html#ga7f83695bea7d0332a577bca017dbb03c">toComplexMatrixN</a>(matrs[i], ops[i]);</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  }</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  </div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <a class="code" href="group__decoherence.html#ga65b4c0944090fae78a37ba3b94811ace">mixMultiQubitKrausMap</a>(qureg, targs, numTargs, ops, numOps);</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  </div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="comment">// set ref -> K_i ref K_i^dagger</span></div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> matrRefs[numOps];</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numOps; i++) {</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  matrRefs[i] = ref;</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <a class="code" href="group__testutilities.html#ga731c2de4d491629d806a03e0aea2f3a3">applyReferenceOp</a>(matrRefs[i], targs, numTargs, matrs[i]);</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  }</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  ref = <a class="code" href="group__testutilities.html#ga6ccbb15b0f234e926be96a153181b63a">getZeroMatrix</a>(ref.size());</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numOps; i++)</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  ref += matrRefs[i];</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  </div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  REQUIRE( <a class="code" href="group__testutilities.html#ga45cc399adad2e2a67b0124851189fae5">areEqual</a>(qureg, ref, 1E2*REAL_EPS) );</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  </div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="comment">// cleanup QuEST datatypes</span></div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numOps; i++)</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <a class="code" href="group__type.html#ga9df2f3d86be4a6e9aad481665e5e6753">destroyComplexMatrixN</a>(ops[i]);</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  }</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  SECTION( <span class="stringliteral">"input validation"</span> ) {</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  </div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  SECTION( <span class="stringliteral">"repetition of target"</span> ) {</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  </div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="comment">// make valid targets</span></div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="keywordtype">int</span> targs[<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>];</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>; i++)</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  targs[i] = i;</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  </div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="comment">// duplicate one</span></div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  <span class="keywordtype">int</span> badInd = GENERATE( range(0,<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>) );</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <span class="keywordtype">int</span> copyInd = GENERATE_COPY( filter([=](<span class="keywordtype">int</span> i){ <span class="keywordflow">return</span> i!=badInd; }, range(0,<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>)) );</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  targs[badInd] = targs[copyInd];</div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  </div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga65b4c0944090fae78a37ba3b94811ace">mixMultiQubitKrausMap</a>(qureg, targs, <a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>, NULL, 1), Contains(<span class="stringliteral">"target qubits"</span>) && Contains(<span class="stringliteral">"unique"</span>) );</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  }</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  SECTION( <span class="stringliteral">"qubit indices"</span> ) { </div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  </div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <span class="comment">// make valid targets</span></div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="keywordtype">int</span> targs[<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>];</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>; i++)</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  targs[i] = i;</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  </div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="comment">// make one invalid </span></div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  targs[GENERATE( range(0,<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>) )] = GENERATE( -1, <a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a> );</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  </div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga65b4c0944090fae78a37ba3b94811ace">mixMultiQubitKrausMap</a>(qureg, targs, <a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>, NULL, 1), Contains(<span class="stringliteral">"Invalid target qubit"</span>) );</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  }</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  SECTION( <span class="stringliteral">"number of operators"</span> ) {</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  </div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="keywordtype">int</span> numTargs = GENERATE_COPY( range(1,maxNumTargs+1) );</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  <span class="keywordtype">int</span> maxNumOps = (2*numTargs)*(2*numTargs);</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  <span class="keywordtype">int</span> numOps = GENERATE_REF( -1, 0, maxNumOps + 1 );</div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  </div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <span class="comment">// make valid targets to avoid triggering target validation</span></div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  <span class="keywordtype">int</span> targs[numTargs];</div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numTargs; i++)</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  targs[i] = i;</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga65b4c0944090fae78a37ba3b94811ace">mixMultiQubitKrausMap</a>(qureg, targs, numTargs, NULL, numOps), Contains(<span class="stringliteral">"operators may be specified"</span>) );</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  }</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  SECTION( <span class="stringliteral">"initialisation of operators"</span> ) {</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  </div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="comment">/* compilers don't auto-initialise to NULL; the below circumstance </span></div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span> <span class="comment"> * only really occurs when 'malloc' returns NULL in createComplexMatrixN, </span></div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span> <span class="comment"> * which actually triggers its own validation. Hence this test is useless </span></div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span> <span class="comment"> * currently.</span></div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  </div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <span class="keywordtype">int</span> numTargs = <a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>;</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <span class="keywordtype">int</span> numOps = (2*numTargs)*(2*numTargs);</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  </div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <span class="comment">// no need to initialise ops, but set their attribs correct to avoid triggering other validation</span></div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <a class="code" href="structComplexMatrixN.html">ComplexMatrixN</a> ops[numOps];</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numOps; i++)</div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  ops[i].numQubits = numTargs;</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  </div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <span class="comment">// make one of the max-ops explicitly NULL</span></div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  ops[GENERATE_COPY( range(0,numTargs) )].<a class="code" href="structComplexMatrixN.html#a446e8a077597e4f76049d547df0c9738">real</a> = NULL;</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  </div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  <span class="comment">// make valid targets to avoid triggering target validation</span></div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <span class="keywordtype">int</span> targs[numTargs];</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numTargs; i++)</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  targs[i] = i;</div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  </div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga65b4c0944090fae78a37ba3b94811ace">mixMultiQubitKrausMap</a>(qureg, targs, numTargs, ops, numOps), Contains(<span class="stringliteral">"ComplexMatrixN"</span>) && Contains(<span class="stringliteral">"created"</span>) );</div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  }</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  SECTION( <span class="stringliteral">"dimension of operators"</span> ) {</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  </div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="comment">// make valid (dimension-wise) max-qubits Kraus map</span></div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  <span class="keywordtype">int</span> numTargs = <a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>;</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="keywordtype">int</span> numOps = (2*numTargs)*(2*numTargs);</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  <a class="code" href="structComplexMatrixN.html">ComplexMatrixN</a> ops[numOps];</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numOps; i++)</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  ops[i] = <a class="code" href="group__type.html#ga815103261fb22ea9690e1427571df00e">createComplexMatrixN</a>(numTargs);</div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  </div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <span class="comment">// make one have wrong-dimensions </span></div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <span class="keywordtype">int</span> badInd = GENERATE_COPY( range(0,numTargs) );</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <a class="code" href="group__type.html#ga9df2f3d86be4a6e9aad481665e5e6753">destroyComplexMatrixN</a>(ops[badInd]);</div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  ops[badInd] = <a class="code" href="group__type.html#ga815103261fb22ea9690e1427571df00e">createComplexMatrixN</a>(numTargs - 1);</div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  </div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <span class="comment">// make valid targets to avoid triggering target validation</span></div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  <span class="keywordtype">int</span> targs[numTargs];</div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numTargs; i++)</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  targs[i] = i;</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  </div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga65b4c0944090fae78a37ba3b94811ace">mixMultiQubitKrausMap</a>(qureg, targs, numTargs, ops, numOps), Contains(<span class="stringliteral">"same number of qubits"</span>) );</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  </div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numOps; i++)</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <a class="code" href="group__type.html#ga9df2f3d86be4a6e9aad481665e5e6753">destroyComplexMatrixN</a>(ops[i]);</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  }</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  SECTION( <span class="stringliteral">"trace preserving"</span> ) {</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  </div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="keywordtype">int</span> numTargs = GENERATE_COPY( range(1,maxNumTargs+1) );</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="keywordtype">int</span> maxNumOps = (2*numTargs) * (2*numTargs);</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <span class="keywordtype">int</span> numOps = GENERATE_COPY( 1, 2, maxNumOps );</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  </div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <span class="comment">// generate a valid map</span></div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  std::vector<QMatrix> matrs = <a class="code" href="group__testutilities.html#ga0d3b30625e2350a1e837a0b259dd3b18">getRandomKrausMap</a>(numTargs, numOps);</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <a class="code" href="structComplexMatrixN.html">ComplexMatrixN</a> ops[numOps];</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numOps; i++) {</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  ops[i] = <a class="code" href="group__type.html#ga815103261fb22ea9690e1427571df00e">createComplexMatrixN</a>(numTargs);</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  <a class="code" href="group__testutilities.html#ga7f83695bea7d0332a577bca017dbb03c">toComplexMatrixN</a>(matrs[i], ops[i]);</div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  }</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  </div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <span class="comment">// make only one invalid</span></div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  ops[GENERATE_REF( range(0,numOps) )].<a class="code" href="structComplexMatrixN.html#a446e8a077597e4f76049d547df0c9738">real</a>[0][0] = 0;</div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  </div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  <span class="comment">// make valid targets to avoid triggering target validation</span></div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="keywordtype">int</span> targs[numTargs];</div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numTargs; i++)</div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  targs[i] = i;</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  </div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga65b4c0944090fae78a37ba3b94811ace">mixMultiQubitKrausMap</a>(qureg, targs, numTargs, ops, numOps), Contains(<span class="stringliteral">"trace preserving"</span>) );</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  </div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numOps; i++)</div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <a class="code" href="group__type.html#ga9df2f3d86be4a6e9aad481665e5e6753">destroyComplexMatrixN</a>(ops[i]);</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  }</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  SECTION( <span class="stringliteral">"density-matrix"</span> ) {</div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  </div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  <a class="code" href="structQureg.html">Qureg</a> statevec = <a class="code" href="group__type.html#ga3392816c0643414165c2f5caeec17df0">createQureg</a>(<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  </div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  <span class="comment">// make valid targets to avoid triggering target validation</span></div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="keywordtype">int</span> targs[<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>];</div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>; i++)</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  targs[i] = i;</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  </div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga65b4c0944090fae78a37ba3b94811ace">mixMultiQubitKrausMap</a>(statevec, targs, <a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>, NULL, 1), Contains(<span class="stringliteral">"valid only for density matrices"</span>) );</div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(statevec, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  </div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  }</div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  SECTION( <span class="stringliteral">"operator fits in node"</span> ) {</div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  </div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  <span class="comment">// each node requires (2 numTargs)^2 amplitudes</span></div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  <span class="keywordtype">int</span> minAmps = (2*<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>) * (2*<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>);</div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  </div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  <span class="comment">// make valid targets to avoid triggering target validation</span></div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <span class="keywordtype">int</span> targs[<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>];</div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>; i++)</div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  targs[i] = i;</div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  </div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  <span class="comment">// make a simple Identity map </span></div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <a class="code" href="structComplexMatrixN.html">ComplexMatrixN</a> ops[] = {<a class="code" href="group__type.html#ga815103261fb22ea9690e1427571df00e">createComplexMatrixN</a>(<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>)};</div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<(1<<<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>); i++)</div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  ops[0].real[i][i] = 1;</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  </div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  <span class="comment">// fake a smaller qureg </span></div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  qureg.numAmpsPerChunk = minAmps - 1;</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga65b4c0944090fae78a37ba3b94811ace">mixMultiQubitKrausMap</a>(qureg, targs, <a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>, ops, 1), Contains(<span class="stringliteral">"targets too many qubits"</span>) && Contains(<span class="stringliteral">"cannot all fit"</span>) );</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  </div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  <a class="code" href="group__type.html#ga9df2f3d86be4a6e9aad481665e5e6753">destroyComplexMatrixN</a>(ops[0]);</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  }</div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  }</div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(qureg, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span> }</div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  </div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  </div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  </div>
<div class="line"><a name="l00442"></a><span class="lineno"><a class="line" href="group__unittest.html#ga4e1cffea3db565911c48cae1d6d08a64"> 442</a></span> <a class="code" href="group__unittest.html#ga6b6a9b1ee734f0ab27cbfbb575bc7b77">TEST_CASE</a>( <span class="stringliteral">"mixPauli"</span>, <span class="stringliteral">"[decoherence]"</span> ) {</div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  </div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  <a class="code" href="test__decoherence_8cpp.html#ae828ab685c6e8b0cec317b7a6c46963a">PREPARE_TEST</a>(qureg, ref);</div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  </div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  SECTION( <span class="stringliteral">"correctness"</span> ) {</div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  </div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  <span class="keywordtype">int</span> target = GENERATE( range(0,<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>) );</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  </div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  <span class="comment">// randomly generate valid pauli-error probabilities</span></div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> probs[3];</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> max0 = 1/2.; <span class="comment">// satisfies p1 < 1 - py</span></div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  probs[0] = <a class="code" href="group__testutilities.html#gacd5aadbe10ecdedaa625f85171c0a3cd">getRandomReal</a>(0, max0);</div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> max1 = (max0 - probs[0])/2.; <span class="comment">// p2 can use half of p1's "unused space"</span></div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  probs[1] = <a class="code" href="group__testutilities.html#gacd5aadbe10ecdedaa625f85171c0a3cd">getRandomReal</a>(0, max1);</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> max2 = (max1 - probs[1])/2.; <span class="comment">// p3 can use half of p2's "unused space"</span></div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  probs[2] = <a class="code" href="group__testutilities.html#gacd5aadbe10ecdedaa625f85171c0a3cd">getRandomReal</a>(0, max2);</div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  </div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  <span class="comment">// uniformly randomly assign probs (bound to target)</span></div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  <span class="keywordtype">int</span> inds[3] = {0,1,2};</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  std::shuffle(inds,inds+3, std::default_random_engine(1E5 * target));</div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> probX = probs[inds[0]]; <span class="comment">// seed:target shows no variation</span></div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> probY = probs[inds[1]];</div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> probZ = probs[inds[2]];</div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  </div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  <a class="code" href="group__decoherence.html#ga9a77f84e1aa7d25d036b14d7d0cd8b61">mixPauli</a>(qureg, target, probX, probY, probZ);</div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  </div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> xRef = ref;</div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <a class="code" href="group__testutilities.html#ga731c2de4d491629d806a03e0aea2f3a3">applyReferenceOp</a>(xRef, target, <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a>{{0,1},{1,0}}); <span class="comment">// X ref X</span></div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> yRef = ref;</div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  <a class="code" href="group__testutilities.html#ga731c2de4d491629d806a03e0aea2f3a3">applyReferenceOp</a>(yRef, target, <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a>{{0,-1i},{1i,0}}); <span class="comment">// Y ref Y</span></div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> zRef = ref;</div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  <a class="code" href="group__testutilities.html#ga731c2de4d491629d806a03e0aea2f3a3">applyReferenceOp</a>(zRef, target, <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a>{{1,0},{0,-1}}); <span class="comment">// Z ref Z</span></div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  ref = ((1 - probX - probY - probZ) * ref) +</div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  (probX * xRef) + (probY * yRef) + (probZ * zRef);</div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  </div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  REQUIRE( <a class="code" href="group__testutilities.html#ga45cc399adad2e2a67b0124851189fae5">areEqual</a>(qureg, ref) );</div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  }</div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  SECTION( <span class="stringliteral">"input validation"</span> ) {</div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  </div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  SECTION( <span class="stringliteral">"qubit index"</span> ) {</div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  </div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  <span class="keywordtype">int</span> target = GENERATE( -1, <a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a> );</div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga9a77f84e1aa7d25d036b14d7d0cd8b61">mixPauli</a>(qureg, target, 0, 0, 0), Contains(<span class="stringliteral">"Invalid target"</span>) );</div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  </div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  }</div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  SECTION( <span class="stringliteral">"probability"</span> ) {</div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  </div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  <span class="keywordtype">int</span> target = 0;</div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  </div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  <span class="comment">// probs clearly must be in [0, 1]</span></div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga9a77f84e1aa7d25d036b14d7d0cd8b61">mixPauli</a>(qureg, target, -.1, 0, 0), Contains(<span class="stringliteral">"Probabilities"</span>) );</div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga9a77f84e1aa7d25d036b14d7d0cd8b61">mixPauli</a>(qureg, target, 0, -.1, 0), Contains(<span class="stringliteral">"Probabilities"</span>) );</div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga9a77f84e1aa7d25d036b14d7d0cd8b61">mixPauli</a>(qureg, target, 0, 0, -.1), Contains(<span class="stringliteral">"Probabilities"</span>) );</div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  </div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  <span class="comment">// max single-non-zero-prob is 0.5</span></div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga9a77f84e1aa7d25d036b14d7d0cd8b61">mixPauli</a>(qureg, target, .6, 0, 0), Contains(<span class="stringliteral">"cannot exceed the probability"</span>) );</div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga9a77f84e1aa7d25d036b14d7d0cd8b61">mixPauli</a>(qureg, target, 0, .6, 0), Contains(<span class="stringliteral">"cannot exceed the probability"</span>) );</div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga9a77f84e1aa7d25d036b14d7d0cd8b61">mixPauli</a>(qureg, target, 0, 0, .6), Contains(<span class="stringliteral">"cannot exceed the probability"</span>) );</div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  </div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  <span class="comment">// must satisfy px, py, pz < 1 - px - py - pz</span></div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga9a77f84e1aa7d25d036b14d7d0cd8b61">mixPauli</a>(qureg, target, .3, .3, .3), Contains(<span class="stringliteral">"cannot exceed the probability"</span>) );</div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  }</div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  SECTION( <span class="stringliteral">"density-matrix"</span> ) {</div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  </div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  <a class="code" href="structQureg.html">Qureg</a> vec = <a class="code" href="group__type.html#ga3392816c0643414165c2f5caeec17df0">createQureg</a>(<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga9a77f84e1aa7d25d036b14d7d0cd8b61">mixPauli</a>(vec, 0, 0, 0, 0), Contains(<span class="stringliteral">"density matrices"</span>) );</div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(vec, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  }</div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  }</div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(qureg, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span> }</div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  </div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  </div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  </div>
<div class="line"><a name="l00520"></a><span class="lineno"><a class="line" href="group__unittest.html#gaaca97157c5296fa1312c8daa3ac89864"> 520</a></span> <a class="code" href="group__unittest.html#ga6b6a9b1ee734f0ab27cbfbb575bc7b77">TEST_CASE</a>( <span class="stringliteral">"mixKrausMap"</span>, <span class="stringliteral">"[decoherence]"</span> ) {</div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  </div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  <a class="code" href="test__decoherence_8cpp.html#ae828ab685c6e8b0cec317b7a6c46963a">PREPARE_TEST</a>(qureg, ref);</div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  </div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  SECTION( <span class="stringliteral">"correctness"</span> ) {</div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  </div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  <span class="keywordtype">int</span> target = GENERATE( range(0,<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>) );</div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  <span class="keywordtype">int</span> numOps = GENERATE( range(1,5) ); <span class="comment">// max 4 inclusive</span></div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  std::vector<QMatrix> matrs = <a class="code" href="group__testutilities.html#ga0d3b30625e2350a1e837a0b259dd3b18">getRandomKrausMap</a>(1, numOps);</div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  </div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  <a class="code" href="structComplexMatrix2.html">ComplexMatrix2</a> ops[numOps];</div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numOps; i++)</div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  ops[i] = <a class="code" href="group__testutilities.html#ga731a7a71755c25ebe96e742e3fbe5812">toComplexMatrix2</a>(matrs[i]);</div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  <a class="code" href="group__decoherence.html#gacb7faa9d8afb0f4270c866424fffbccd">mixKrausMap</a>(qureg, target, ops, numOps);</div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  </div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  <span class="comment">// set ref -> K_i ref K_i^dagger</span></div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> matrRefs[numOps];</div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numOps; i++) {</div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  matrRefs[i] = ref;</div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  <a class="code" href="group__testutilities.html#ga731c2de4d491629d806a03e0aea2f3a3">applyReferenceOp</a>(matrRefs[i], target, matrs[i]);</div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  }</div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  ref = <a class="code" href="group__testutilities.html#ga6ccbb15b0f234e926be96a153181b63a">getZeroMatrix</a>(ref.size());</div>
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numOps; i++)</div>
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  ref += matrRefs[i];</div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  </div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  REQUIRE( <a class="code" href="group__testutilities.html#ga45cc399adad2e2a67b0124851189fae5">areEqual</a>(qureg, ref, 10*REAL_EPS) );</div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  }</div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  SECTION( <span class="stringliteral">"input validation"</span> ) {</div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  </div>
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  SECTION( <span class="stringliteral">"number of operators"</span> ) {</div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  </div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  <span class="keywordtype">int</span> numOps = GENERATE( 0, 5 );</div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#gacb7faa9d8afb0f4270c866424fffbccd">mixKrausMap</a>(qureg, 0, NULL, numOps), Contains(<span class="stringliteral">"operators"</span>) );</div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  }</div>
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  SECTION( <span class="stringliteral">"trace preserving"</span> ) {</div>
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span>  </div>
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  <span class="comment">// valid Kraus map</span></div>
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span>  <span class="keywordtype">int</span> numOps = GENERATE( range(1,5) ); <span class="comment">// max 4 inclusive</span></div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  std::vector<QMatrix> matrs = <a class="code" href="group__testutilities.html#ga0d3b30625e2350a1e837a0b259dd3b18">getRandomKrausMap</a>(1, numOps);</div>
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  <a class="code" href="structComplexMatrix2.html">ComplexMatrix2</a> ops[numOps];</div>
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numOps; i++)</div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  ops[i] = <a class="code" href="group__testutilities.html#ga731a7a71755c25ebe96e742e3fbe5812">toComplexMatrix2</a>(matrs[i]);</div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  </div>
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  <span class="comment">// make invalid</span></div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  ops[GENERATE_REF( range(0,numOps) )].<a class="code" href="structComplexMatrix2.html#a3ea98d545b67a190ee6abe936c72076f">real</a>[0][0] = 0;</div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#gacb7faa9d8afb0f4270c866424fffbccd">mixKrausMap</a>(qureg, 0, ops, numOps), Contains(<span class="stringliteral">"trace preserving"</span>) );</div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  </div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  }</div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  SECTION( <span class="stringliteral">"qubit index"</span> ) {</div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  </div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  <span class="keywordtype">int</span> target = GENERATE( -1, <a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a> );</div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#gacb7faa9d8afb0f4270c866424fffbccd">mixKrausMap</a>(qureg, target, NULL, 1), Contains(<span class="stringliteral">"Invalid target qubit"</span>) );</div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  }</div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  SECTION( <span class="stringliteral">"density-matrix"</span> ) {</div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>  </div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  <a class="code" href="structQureg.html">Qureg</a> vec = <a class="code" href="group__type.html#ga3392816c0643414165c2f5caeec17df0">createQureg</a>(<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#gacb7faa9d8afb0f4270c866424fffbccd">mixKrausMap</a>(vec, 0, NULL, 1), Contains(<span class="stringliteral">"density matrices"</span>) );</div>
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(vec, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  }</div>
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  SECTION( <span class="stringliteral">"operators fit in node"</span> ) {</div>
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span>  </div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  qureg.numAmpsPerChunk = 3; <span class="comment">// min 4</span></div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#gacb7faa9d8afb0f4270c866424fffbccd">mixKrausMap</a>(qureg, 0, NULL, 1), Contains(<span class="stringliteral">"targets too many qubits"</span>) );</div>
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  } </div>
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  }</div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(qureg, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span> }</div>
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  </div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  </div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  </div>
<div class="line"><a name="l00594"></a><span class="lineno"><a class="line" href="group__unittest.html#gab377b0280d26028a2405eb883003fe10"> 594</a></span> <a class="code" href="group__unittest.html#ga6b6a9b1ee734f0ab27cbfbb575bc7b77">TEST_CASE</a>( <span class="stringliteral">"mixTwoQubitDephasing"</span>, <span class="stringliteral">"[decoherence]"</span> ) {</div>
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span>  </div>
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  <a class="code" href="test__decoherence_8cpp.html#ae828ab685c6e8b0cec317b7a6c46963a">PREPARE_TEST</a>(qureg, ref);</div>
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  </div>
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  SECTION( <span class="stringliteral">"correctness"</span> ) {</div>
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  </div>
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  <span class="keywordtype">int</span> targ1 = GENERATE( range(0,<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>) );</div>
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  <span class="keywordtype">int</span> targ2 = GENERATE_COPY( filter([=](<span class="keywordtype">int</span> t){ <span class="keywordflow">return</span> t!=targ1; }, range(0,<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>)) );</div>
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> prob = <a class="code" href="group__testutilities.html#gacd5aadbe10ecdedaa625f85171c0a3cd">getRandomReal</a>(0, 3/4.);</div>
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  </div>
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  <a class="code" href="group__decoherence.html#ga14282bdb1dc65760ca9ecbe6305eb770">mixTwoQubitDephasing</a>(qureg, targ1, targ2, prob);</div>
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  </div>
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  <span class="comment">// ref -> (1 - prob) ref + prob/3 (Z1 ref Z1 + Z2 ref Z2 + Z1 Z2 ref Z1 Z2)</span></div>
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> zMatr{{1,0},{0,-1}};</div>
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> z1Ref = ref;</div>
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  <a class="code" href="group__testutilities.html#ga731c2de4d491629d806a03e0aea2f3a3">applyReferenceOp</a>(z1Ref, targ1, zMatr); <span class="comment">// Z1 ref Z1</span></div>
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> z2Ref = ref;</div>
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  <a class="code" href="group__testutilities.html#ga731c2de4d491629d806a03e0aea2f3a3">applyReferenceOp</a>(z2Ref, targ2, zMatr); <span class="comment">// Z2 ref Z2</span></div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> z1z2Ref = ref;</div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  <a class="code" href="group__testutilities.html#ga731c2de4d491629d806a03e0aea2f3a3">applyReferenceOp</a>(z1z2Ref, targ1, zMatr);</div>
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  <a class="code" href="group__testutilities.html#ga731c2de4d491629d806a03e0aea2f3a3">applyReferenceOp</a>(z1z2Ref, targ2, zMatr); <span class="comment">// Z1 Z2 ref Z1 Z2</span></div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  ref = ((1 - prob) * ref) + (prob/3.) * (z1Ref + z2Ref + z1z2Ref);</div>
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  </div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  REQUIRE( <a class="code" href="group__testutilities.html#ga45cc399adad2e2a67b0124851189fae5">areEqual</a>(qureg, ref) );</div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  }</div>
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  SECTION( <span class="stringliteral">"input validation"</span> ) {</div>
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  </div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  SECTION( <span class="stringliteral">"qubit indices"</span> ) {</div>
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  </div>
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  <span class="keywordtype">int</span> targ = GENERATE( -1, <a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a> );</div>
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga14282bdb1dc65760ca9ecbe6305eb770">mixTwoQubitDephasing</a>(qureg, 0, targ, 0), Contains(<span class="stringliteral">"Invalid target"</span>) );</div>
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga14282bdb1dc65760ca9ecbe6305eb770">mixTwoQubitDephasing</a>(qureg, targ, 0, 0), Contains(<span class="stringliteral">"Invalid target"</span>) );</div>
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  }</div>
<div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  SECTION( <span class="stringliteral">"target collision"</span> ) {</div>
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  </div>
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  <span class="keywordtype">int</span> targ = GENERATE( range(0,<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>) );</div>
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga14282bdb1dc65760ca9ecbe6305eb770">mixTwoQubitDephasing</a>(qureg, targ, targ, 0), Contains(<span class="stringliteral">"target"</span>) && Contains(<span class="stringliteral">"unique"</span>) );</div>
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  }</div>
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span>  SECTION( <span class="stringliteral">"probability"</span> ) {</div>
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span>  </div>
<div class="line"><a name="l00634"></a><span class="lineno"> 634</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga14282bdb1dc65760ca9ecbe6305eb770">mixTwoQubitDephasing</a>(qureg, 0, 1, -.1), Contains(<span class="stringliteral">"Probabilities"</span>) );</div>
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga14282bdb1dc65760ca9ecbe6305eb770">mixTwoQubitDephasing</a>(qureg, 0, 1, 3/4. + .01), Contains(<span class="stringliteral">"probability"</span>) && Contains(<span class="stringliteral">"cannot exceed 3/4"</span>) );</div>
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  }</div>
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  SECTION( <span class="stringliteral">"density-matrix"</span> ) {</div>
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span>  </div>
<div class="line"><a name="l00639"></a><span class="lineno"> 639</span>  <a class="code" href="structQureg.html">Qureg</a> vec = <a class="code" href="group__type.html#ga3392816c0643414165c2f5caeec17df0">createQureg</a>(<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00640"></a><span class="lineno"> 640</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga14282bdb1dc65760ca9ecbe6305eb770">mixTwoQubitDephasing</a>(vec, 0, 1, 0), Contains(<span class="stringliteral">"density matrices"</span>) );</div>
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(vec, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00642"></a><span class="lineno"> 642</span>  }</div>
<div class="line"><a name="l00643"></a><span class="lineno"> 643</span>  }</div>
<div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(qureg, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span> }</div>
<div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  </div>
<div class="line"><a name="l00647"></a><span class="lineno"> 647</span>  </div>
<div class="line"><a name="l00648"></a><span class="lineno"> 648</span>  </div>
<div class="line"><a name="l00653"></a><span class="lineno"><a class="line" href="group__unittest.html#ga126f891ab958e59fbb3add97c5a519e3"> 653</a></span> <a class="code" href="group__unittest.html#ga6b6a9b1ee734f0ab27cbfbb575bc7b77">TEST_CASE</a>( <span class="stringliteral">"mixTwoQubitDepolarising"</span>, <span class="stringliteral">"[decoherence]"</span> ) {</div>
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  </div>
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span>  <a class="code" href="test__decoherence_8cpp.html#ae828ab685c6e8b0cec317b7a6c46963a">PREPARE_TEST</a>(qureg, ref);</div>
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span>  </div>
<div class="line"><a name="l00657"></a><span class="lineno"> 657</span>  SECTION( <span class="stringliteral">"correctness"</span> ) {</div>
<div class="line"><a name="l00658"></a><span class="lineno"> 658</span>  </div>
<div class="line"><a name="l00659"></a><span class="lineno"> 659</span>  <span class="keywordtype">int</span> targ1 = GENERATE( range(0,<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>) );</div>
<div class="line"><a name="l00660"></a><span class="lineno"> 660</span>  <span class="keywordtype">int</span> targ2 = GENERATE_COPY( filter([=](<span class="keywordtype">int</span> t){ <span class="keywordflow">return</span> t!=targ1; }, range(0,<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>)) );</div>
<div class="line"><a name="l00661"></a><span class="lineno"> 661</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> prob = <a class="code" href="group__testutilities.html#gacd5aadbe10ecdedaa625f85171c0a3cd">getRandomReal</a>(0, 15/16.);</div>
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span>  </div>
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span>  <a class="code" href="group__decoherence.html#gacfc45a8fc86ee18f60866bbd0c874ed0">mixTwoQubitDepolarising</a>(qureg, targ1, targ2, prob);</div>
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span>  </div>
<div class="line"><a name="l00665"></a><span class="lineno"> 665</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> paulis[4] = {</div>
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a>{{1,0},{0,1}}, <span class="comment">// I </span></div>
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a>{{0,1},{1,0}}, <span class="comment">// X</span></div>
<div class="line"><a name="l00668"></a><span class="lineno"> 668</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a>{{0,-1i},{1i,0}}, <span class="comment">// Y</span></div>
<div class="line"><a name="l00669"></a><span class="lineno"> 669</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a>{{1,0},{0,-1}} <span class="comment">// Z</span></div>
<div class="line"><a name="l00670"></a><span class="lineno"> 670</span>  };</div>
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span>  </div>
<div class="line"><a name="l00672"></a><span class="lineno"> 672</span>  <span class="keywordtype">int</span> targs[2] = {targ1, targ2};</div>
<div class="line"><a name="l00673"></a><span class="lineno"> 673</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> refInit = ref;</div>
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span>  ref = (1 - (16/15.)*prob) * ref;</div>
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<4; i++) {</div>
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j=0; j<4; j++) {</div>
<div class="line"><a name="l00677"></a><span class="lineno"> 677</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> term = refInit;</div>
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span>  <a class="code" href="group__testutilities.html#ga731c2de4d491629d806a03e0aea2f3a3">applyReferenceOp</a>(term, targs, 2,</div>
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  <a class="code" href="group__testutilities.html#ga50616e813b0d0aa4f8220785d780cdff">getKroneckerProduct</a>(paulis[i], paulis[j]));</div>
<div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  ref += (prob/15.) * term;</div>
<div class="line"><a name="l00681"></a><span class="lineno"> 681</span>  }</div>
<div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  }</div>
<div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  </div>
<div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  REQUIRE( <a class="code" href="group__testutilities.html#ga45cc399adad2e2a67b0124851189fae5">areEqual</a>(qureg, ref, 1E4*REAL_EPS) );</div>
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span>  }</div>
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span>  SECTION( <span class="stringliteral">"input validation"</span> ) {</div>
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span>  </div>
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  SECTION( <span class="stringliteral">"qubit indices"</span> ) {</div>
<div class="line"><a name="l00689"></a><span class="lineno"> 689</span>  </div>
<div class="line"><a name="l00690"></a><span class="lineno"> 690</span>  <span class="keywordtype">int</span> targ = GENERATE( -1, <a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a> );</div>
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#gacfc45a8fc86ee18f60866bbd0c874ed0">mixTwoQubitDepolarising</a>(qureg, 0, targ, 0), Contains(<span class="stringliteral">"Invalid target"</span>) );</div>
<div class="line"><a name="l00692"></a><span class="lineno"> 692</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#gacfc45a8fc86ee18f60866bbd0c874ed0">mixTwoQubitDepolarising</a>(qureg, targ, 0, 0), Contains(<span class="stringliteral">"Invalid target"</span>) );</div>
<div class="line"><a name="l00693"></a><span class="lineno"> 693</span>  }</div>
<div class="line"><a name="l00694"></a><span class="lineno"> 694</span>  SECTION( <span class="stringliteral">"target collision"</span> ) {</div>
<div class="line"><a name="l00695"></a><span class="lineno"> 695</span>  </div>
<div class="line"><a name="l00696"></a><span class="lineno"> 696</span>  <span class="keywordtype">int</span> targ = GENERATE( range(0,<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>) );</div>
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#gacfc45a8fc86ee18f60866bbd0c874ed0">mixTwoQubitDepolarising</a>(qureg, targ, targ, 0), Contains(<span class="stringliteral">"target"</span>) && Contains(<span class="stringliteral">"unique"</span>) );</div>
<div class="line"><a name="l00698"></a><span class="lineno"> 698</span>  }</div>
<div class="line"><a name="l00699"></a><span class="lineno"> 699</span>  SECTION( <span class="stringliteral">"probability"</span> ) {</div>
<div class="line"><a name="l00700"></a><span class="lineno"> 700</span>  </div>
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#gacfc45a8fc86ee18f60866bbd0c874ed0">mixTwoQubitDepolarising</a>(qureg, 0, 1, -.1), Contains(<span class="stringliteral">"Probabilities"</span>) );</div>
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#gacfc45a8fc86ee18f60866bbd0c874ed0">mixTwoQubitDepolarising</a>(qureg, 0, 1, 15/16. + .01), Contains(<span class="stringliteral">"probability"</span>) && Contains(<span class="stringliteral">"cannot exceed 15/16"</span>) );</div>
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span>  }</div>
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  SECTION( <span class="stringliteral">"density-matrix"</span> ) {</div>
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  </div>
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  <a class="code" href="structQureg.html">Qureg</a> vec = <a class="code" href="group__type.html#ga3392816c0643414165c2f5caeec17df0">createQureg</a>(<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00707"></a><span class="lineno"> 707</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#gacfc45a8fc86ee18f60866bbd0c874ed0">mixTwoQubitDepolarising</a>(vec, 0, 1, 0), Contains(<span class="stringliteral">"density matrices"</span>) );</div>
<div class="line"><a name="l00708"></a><span class="lineno"> 708</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(vec, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00709"></a><span class="lineno"> 709</span>  }</div>
<div class="line"><a name="l00710"></a><span class="lineno"> 710</span>  }</div>
<div class="line"><a name="l00711"></a><span class="lineno"> 711</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(qureg, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span> }</div>
<div class="line"><a name="l00713"></a><span class="lineno"> 713</span>  </div>
<div class="line"><a name="l00714"></a><span class="lineno"> 714</span>  </div>
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span>  </div>
<div class="line"><a name="l00720"></a><span class="lineno"><a class="line" href="group__unittest.html#ga6133174f068561e9d899c059c39ed36c"> 720</a></span> <a class="code" href="group__unittest.html#ga6b6a9b1ee734f0ab27cbfbb575bc7b77">TEST_CASE</a>( <span class="stringliteral">"mixTwoQubitKrausMap"</span>, <span class="stringliteral">"[decoherence]"</span> ) {</div>
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span>  </div>
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span>  <a class="code" href="test__decoherence_8cpp.html#ae828ab685c6e8b0cec317b7a6c46963a">PREPARE_TEST</a>(qureg, ref);</div>
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  </div>
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  SECTION( <span class="stringliteral">"correctness"</span> ) {</div>
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span>  </div>
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span>  <span class="keywordtype">int</span> targ1 = GENERATE( range(0,<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>) );</div>
<div class="line"><a name="l00727"></a><span class="lineno"> 727</span>  <span class="keywordtype">int</span> targ2 = GENERATE_COPY( filter([=](<span class="keywordtype">int</span> t){ <span class="keywordflow">return</span> t!=targ1; }, range(0,<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>)) );</div>
<div class="line"><a name="l00728"></a><span class="lineno"> 728</span>  <span class="keywordtype">int</span> numOps = GENERATE( range(1,17) ); <span class="comment">// max 16 inclusive</span></div>
<div class="line"><a name="l00729"></a><span class="lineno"> 729</span>  std::vector<QMatrix> matrs = <a class="code" href="group__testutilities.html#ga0d3b30625e2350a1e837a0b259dd3b18">getRandomKrausMap</a>(2, numOps);</div>
<div class="line"><a name="l00730"></a><span class="lineno"> 730</span>  </div>
<div class="line"><a name="l00731"></a><span class="lineno"> 731</span>  <a class="code" href="structComplexMatrix4.html">ComplexMatrix4</a> ops[numOps];</div>
<div class="line"><a name="l00732"></a><span class="lineno"> 732</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numOps; i++)</div>
<div class="line"><a name="l00733"></a><span class="lineno"> 733</span>  ops[i] = <a class="code" href="group__testutilities.html#ga216f7c25bbb0cf752d1b6fff5ea8197b">toComplexMatrix4</a>(matrs[i]);</div>
<div class="line"><a name="l00734"></a><span class="lineno"> 734</span>  <a class="code" href="group__decoherence.html#ga2cf7dece0efea4207349f872cdcb7e81">mixTwoQubitKrausMap</a>(qureg, targ1, targ2, ops, numOps);</div>
<div class="line"><a name="l00735"></a><span class="lineno"> 735</span>  </div>
<div class="line"><a name="l00736"></a><span class="lineno"> 736</span>  <span class="comment">// set ref -> K_i ref K_i^dagger</span></div>
<div class="line"><a name="l00737"></a><span class="lineno"> 737</span>  <span class="keywordtype">int</span> targs[2] = {targ1, targ2};</div>
<div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  <a class="code" href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a> matrRefs[numOps];</div>
<div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numOps; i++) {</div>
<div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  matrRefs[i] = ref;</div>
<div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  <a class="code" href="group__testutilities.html#ga731c2de4d491629d806a03e0aea2f3a3">applyReferenceOp</a>(matrRefs[i], targs, 2, matrs[i]);</div>
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  }</div>
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span>  ref = <a class="code" href="group__testutilities.html#ga6ccbb15b0f234e926be96a153181b63a">getZeroMatrix</a>(ref.size());</div>
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numOps; i++)</div>
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  ref += matrRefs[i];</div>
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  </div>
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  REQUIRE( <a class="code" href="group__testutilities.html#ga45cc399adad2e2a67b0124851189fae5">areEqual</a>(qureg, ref, 10*REAL_EPS) );</div>
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  }</div>
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span>  SECTION( <span class="stringliteral">"input validation"</span> ) {</div>
<div class="line"><a name="l00750"></a><span class="lineno"> 750</span>  </div>
<div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  SECTION( <span class="stringliteral">"number of operators"</span> ) {</div>
<div class="line"><a name="l00752"></a><span class="lineno"> 752</span>  </div>
<div class="line"><a name="l00753"></a><span class="lineno"> 753</span>  <span class="keywordtype">int</span> numOps = GENERATE( 0, 17 );</div>
<div class="line"><a name="l00754"></a><span class="lineno"> 754</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga2cf7dece0efea4207349f872cdcb7e81">mixTwoQubitKrausMap</a>(qureg, 0,1, NULL, numOps), Contains(<span class="stringliteral">"operators"</span>) );</div>
<div class="line"><a name="l00755"></a><span class="lineno"> 755</span>  }</div>
<div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  SECTION( <span class="stringliteral">"trace preserving"</span> ) {</div>
<div class="line"><a name="l00757"></a><span class="lineno"> 757</span>  </div>
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  <span class="comment">// valid Kraus map</span></div>
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  <span class="keywordtype">int</span> numOps = GENERATE( range(1,16) );</div>
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  std::vector<QMatrix> matrs = <a class="code" href="group__testutilities.html#ga0d3b30625e2350a1e837a0b259dd3b18">getRandomKrausMap</a>(2, numOps);</div>
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  <a class="code" href="structComplexMatrix4.html">ComplexMatrix4</a> ops[numOps];</div>
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numOps; i++)</div>
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span>  ops[i] = <a class="code" href="group__testutilities.html#ga216f7c25bbb0cf752d1b6fff5ea8197b">toComplexMatrix4</a>(matrs[i]);</div>
<div class="line"><a name="l00764"></a><span class="lineno"> 764</span>  </div>
<div class="line"><a name="l00765"></a><span class="lineno"> 765</span>  <span class="comment">// make only one of the ops at a time invalid</span></div>
<div class="line"><a name="l00766"></a><span class="lineno"> 766</span>  ops[GENERATE_REF( range(0,numOps) )].<a class="code" href="structComplexMatrix4.html#aeadc9893e1b16cdd585dac523e73926c">real</a>[0][0] = 0;</div>
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga2cf7dece0efea4207349f872cdcb7e81">mixTwoQubitKrausMap</a>(qureg, 0,1, ops, numOps), Contains(<span class="stringliteral">"trace preserving"</span>) );</div>
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span>  }</div>
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  SECTION( <span class="stringliteral">"target collision"</span> ) {</div>
<div class="line"><a name="l00770"></a><span class="lineno"> 770</span>  </div>
<div class="line"><a name="l00771"></a><span class="lineno"> 771</span>  <span class="keywordtype">int</span> target = GENERATE( range(0,<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>) );</div>
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga2cf7dece0efea4207349f872cdcb7e81">mixTwoQubitKrausMap</a>(qureg, target, target, NULL, 1), Contains(<span class="stringliteral">"target qubits"</span>) && Contains(<span class="stringliteral">"unique"</span>) );</div>
<div class="line"><a name="l00773"></a><span class="lineno"> 773</span>  }</div>
<div class="line"><a name="l00774"></a><span class="lineno"> 774</span>  SECTION( <span class="stringliteral">"qubit index"</span> ) {</div>
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  </div>
<div class="line"><a name="l00776"></a><span class="lineno"> 776</span>  <span class="keywordtype">int</span> target = GENERATE( -1, <a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a> );</div>
<div class="line"><a name="l00777"></a><span class="lineno"> 777</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga2cf7dece0efea4207349f872cdcb7e81">mixTwoQubitKrausMap</a>(qureg, 0,target, NULL, 1), Contains(<span class="stringliteral">"Invalid target qubit"</span>) );</div>
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga2cf7dece0efea4207349f872cdcb7e81">mixTwoQubitKrausMap</a>(qureg, target,0, NULL, 1), Contains(<span class="stringliteral">"Invalid target qubit"</span>) );</div>
<div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  }</div>
<div class="line"><a name="l00780"></a><span class="lineno"> 780</span>  SECTION( <span class="stringliteral">"density-matrix"</span> ) {</div>
<div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  </div>
<div class="line"><a name="l00782"></a><span class="lineno"> 782</span>  <a class="code" href="structQureg.html">Qureg</a> vec = <a class="code" href="group__type.html#ga3392816c0643414165c2f5caeec17df0">createQureg</a>(<a class="code" href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a>, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga2cf7dece0efea4207349f872cdcb7e81">mixTwoQubitKrausMap</a>(vec, 0,1, NULL, 1), Contains(<span class="stringliteral">"density matrices"</span>) );</div>
<div class="line"><a name="l00784"></a><span class="lineno"> 784</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(vec, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00785"></a><span class="lineno"> 785</span>  }</div>
<div class="line"><a name="l00786"></a><span class="lineno"> 786</span>  SECTION( <span class="stringliteral">"operators fit in node"</span> ) {</div>
<div class="line"><a name="l00787"></a><span class="lineno"> 787</span>  </div>
<div class="line"><a name="l00788"></a><span class="lineno"> 788</span>  qureg.numAmpsPerChunk = 15; <span class="comment">// min 16</span></div>
<div class="line"><a name="l00789"></a><span class="lineno"> 789</span>  REQUIRE_THROWS_WITH( <a class="code" href="group__decoherence.html#ga2cf7dece0efea4207349f872cdcb7e81">mixTwoQubitKrausMap</a>(qureg, 0,1, NULL, 1), Contains(<span class="stringliteral">"targets too many qubits"</span>) );</div>
<div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  } </div>
<div class="line"><a name="l00791"></a><span class="lineno"> 791</span>  }</div>
<div class="line"><a name="l00792"></a><span class="lineno"> 792</span>  <a class="code" href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a>(qureg, <a class="code" href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a>);</div>
<div class="line"><a name="l00793"></a><span class="lineno"> 793</span> }</div>
<div class="line"><a name="l00794"></a><span class="lineno"> 794</span>  </div>
</div><!-- fragment --></div><!-- contents -->
<div class="ttc" id="amain_8cpp_html_a718130cc1fc36cde991aff3d4c85c47d"><div class="ttname"><a href="main_8cpp.html#a718130cc1fc36cde991aff3d4c85c47d">QUEST_ENV</a></div><div class="ttdeci">QuESTEnv QUEST_ENV</div><div class="ttdoc">The global QuESTEnv instance, to be created and destroyed once in this main(), so that the MPI enviro...</div><div class="ttdef"><b>Definition:</b> <a href="main_8cpp_source.html#l00020">main.cpp:20</a></div></div>
<div class="ttc" id="astructComplexMatrix4_html_aeadc9893e1b16cdd585dac523e73926c"><div class="ttname"><a href="structComplexMatrix4.html#aeadc9893e1b16cdd585dac523e73926c">ComplexMatrix4::real</a></div><div class="ttdeci">qreal real[4][4]</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00127">QuEST.h:127</a></div></div>
<div class="ttc" id="agroup__type_html_ga9df2f3d86be4a6e9aad481665e5e6753"><div class="ttname"><a href="group__type.html#ga9df2f3d86be4a6e9aad481665e5e6753">destroyComplexMatrixN</a></div><div class="ttdeci">void destroyComplexMatrixN(ComplexMatrixN m)</div><div class="ttdoc">Destroy a ComplexMatrixN instance created with createComplexMatrixN()</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8c_source.html#l01021">QuEST.c:1021</a></div></div>
<div class="ttc" id="agroup__testutilities_html_ga0d3b30625e2350a1e837a0b259dd3b18"><div class="ttname"><a href="group__testutilities.html#ga0d3b30625e2350a1e837a0b259dd3b18">getRandomKrausMap</a></div><div class="ttdeci">std::vector< QMatrix > getRandomKrausMap(int numQb, int numOps)</div><div class="ttdoc">Returns a random Kraus map of #numOps 2^numQb-by-2^numQb operators, from an undisclosed distribution.</div><div class="ttdef"><b>Definition:</b> <a href="utilities_8cpp_source.html#l00533">utilities.cpp:533</a></div></div>
<div class="ttc" id="agroup__type_html_ga815103261fb22ea9690e1427571df00e"><div class="ttname"><a href="group__type.html#ga815103261fb22ea9690e1427571df00e">createComplexMatrixN</a></div><div class="ttdeci">ComplexMatrixN createComplexMatrixN(int numQubits)</div><div class="ttdoc">Create (dynamically) a square complex matrix which can be passed to the multi-qubit general unitary f...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8c_source.html#l01000">QuEST.c:1000</a></div></div>
<div class="ttc" id="agroup__decoherence_html_gacb7faa9d8afb0f4270c866424fffbccd"><div class="ttname"><a href="group__decoherence.html#gacb7faa9d8afb0f4270c866424fffbccd">mixKrausMap</a></div><div class="ttdeci">void mixKrausMap(Qureg qureg, int target, ComplexMatrix2 *ops, int numOps)</div><div class="ttdoc">Apply a general single-qubit Kraus map to a density matrix, as specified by at most four Kraus operat...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8c_source.html#l00966">QuEST.c:966</a></div></div>
<div class="ttc" id="autilities_8hpp_html_a2f52338126bb8cdf7fcf68eaf01c546a"><div class="ttname"><a href="utilities_8hpp.html#a2f52338126bb8cdf7fcf68eaf01c546a">NUM_QUBITS</a></div><div class="ttdeci">#define NUM_QUBITS</div><div class="ttdoc">The default number of qubits in the registers created for unit testing (both statevectors and density...</div><div class="ttdef"><b>Definition:</b> <a href="utilities_8hpp_source.html#l00036">utilities.hpp:36</a></div></div>
<div class="ttc" id="agroup__decoherence_html_ga91edd6320f517810a58afd4b845edf12"><div class="ttname"><a href="group__decoherence.html#ga91edd6320f517810a58afd4b845edf12">mixDephasing</a></div><div class="ttdeci">void mixDephasing(Qureg qureg, const int targetQubit, qreal prob)</div><div class="ttdoc">Mixes a density matrix qureg to induce single-qubit dephasing noise.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8c_source.html#l00902">QuEST.c:902</a></div></div>
<div class="ttc" id="aQuEST_8h_html"><div class="ttname"><a href="QuEST_8h.html">QuEST.h</a></div></div>
<div class="ttc" id="agroup__testutilities_html_gacd5aadbe10ecdedaa625f85171c0a3cd"><div class="ttname"><a href="group__testutilities.html#gacd5aadbe10ecdedaa625f85171c0a3cd">getRandomReal</a></div><div class="ttdeci">qreal getRandomReal(qreal min, qreal max)</div><div class="ttdoc">Returns a random real between min (inclusive) and max (exclusive), from the uniform distribution.</div><div class="ttdef"><b>Definition:</b> <a href="utilities_8cpp_source.html#l00410">utilities.cpp:410</a></div></div>
<div class="ttc" id="agroup__decoherence_html_gacfc45a8fc86ee18f60866bbd0c874ed0"><div class="ttname"><a href="group__decoherence.html#gacfc45a8fc86ee18f60866bbd0c874ed0">mixTwoQubitDepolarising</a></div><div class="ttdeci">void mixTwoQubitDepolarising(Qureg qureg, int qubit1, int qubit2, qreal prob)</div><div class="ttdoc">Mixes a density matrix qureg to induce two-qubit homogeneous depolarising noise.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8c_source.html#l00943">QuEST.c:943</a></div></div>
<div class="ttc" id="astructComplexMatrix4_html"><div class="ttname"><a href="structComplexMatrix4.html">ComplexMatrix4</a></div><div class="ttdoc">Represents a 4x4 matrix of complex numbers.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00125">QuEST.h:125</a></div></div>
<div class="ttc" id="astructComplexMatrixN_html"><div class="ttname"><a href="structComplexMatrixN.html">ComplexMatrixN</a></div><div class="ttdoc">Represents a general 2^N by 2^N matrix of complex numbers.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00136">QuEST.h:136</a></div></div>
<div class="ttc" id="agroup__type_html_ga7740e349b4f8bae6451547680f0ce2d6"><div class="ttname"><a href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a></div><div class="ttdeci">#define qreal</div></div>
<div class="ttc" id="agroup__testutilities_html_ga253946523907014c4f198d2bb38d4913"><div class="ttname"><a href="group__testutilities.html#ga253946523907014c4f198d2bb38d4913">toQMatrix</a></div><div class="ttdeci">QMatrix toQMatrix(ComplexMatrix2 src)</div><div class="ttdoc">Returns a copy of the given 2-by-2 matrix.</div><div class="ttdef"><b>Definition:</b> <a href="utilities_8cpp_source.html#l00835">utilities.cpp:835</a></div></div>
<div class="ttc" id="agroup__testutilities_html_ga267884197cf7f1d428021cb12a57360c"><div class="ttname"><a href="group__testutilities.html#ga267884197cf7f1d428021cb12a57360c">calcLog2</a></div><div class="ttdeci">unsigned int calcLog2(long unsigned int num)</div><div class="ttdoc">returns log2 of numbers which must be gauranteed to be 2^n</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__validation_8c_source.html#l00254">QuEST_validation.c:254</a></div></div>
<div class="ttc" id="agroup__testutilities_html_ga7f83695bea7d0332a577bca017dbb03c"><div class="ttname"><a href="group__testutilities.html#ga7f83695bea7d0332a577bca017dbb03c">toComplexMatrixN</a></div><div class="ttdeci">void toComplexMatrixN(QMatrix qm, ComplexMatrixN cm)</div><div class="ttdoc">Initialises cm with the values of qm.</div><div class="ttdef"><b>Definition:</b> <a href="utilities_8cpp_source.html#l00824">utilities.cpp:824</a></div></div>
<div class="ttc" id="agroup__testutilities_html_ga216f7c25bbb0cf752d1b6fff5ea8197b"><div class="ttname"><a href="group__testutilities.html#ga216f7c25bbb0cf752d1b6fff5ea8197b">toComplexMatrix4</a></div><div class="ttdeci">ComplexMatrix4 toComplexMatrix4(QMatrix qm)</div><div class="ttdoc">Returns a ComplexMatrix4 copy of QMatix qm.</div><div class="ttdef"><b>Definition:</b> <a href="utilities_8cpp_source.html#l00818">utilities.cpp:818</a></div></div>
<div class="ttc" id="agroup__type_html_ga8e1e6ad3254892edc2ee08712ea9d692"><div class="ttname"><a href="group__type.html#ga8e1e6ad3254892edc2ee08712ea9d692">destroyQureg</a></div><div class="ttdeci">void destroyQureg(Qureg qureg, QuESTEnv env)</div><div class="ttdoc">Deallocate a Qureg object representing a set of qubits.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8c_source.html#l00075">QuEST.c:75</a></div></div>
<div class="ttc" id="agroup__decoherence_html_ga2cf7dece0efea4207349f872cdcb7e81"><div class="ttname"><a href="group__decoherence.html#ga2cf7dece0efea4207349f872cdcb7e81">mixTwoQubitKrausMap</a></div><div class="ttdeci">void mixTwoQubitKrausMap(Qureg qureg, int target1, int target2, ComplexMatrix4 *ops, int numOps)</div><div class="ttdoc">Apply a general two-qubit Kraus map to a density matrix, as specified by at most sixteen Kraus operat...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8c_source.html#l00976">QuEST.c:976</a></div></div>
<div class="ttc" id="astructComplexMatrixN_html_a446e8a077597e4f76049d547df0c9738"><div class="ttname"><a href="structComplexMatrixN.html#a446e8a077597e4f76049d547df0c9738">ComplexMatrixN::real</a></div><div class="ttdeci">qreal ** real</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00139">QuEST.h:139</a></div></div>
<div class="ttc" id="agroup__debug_html_gaa696c94112e5fbbc996af10dfc4e2c1c"><div class="ttname"><a href="group__debug.html#gaa696c94112e5fbbc996af10dfc4e2c1c">initDebugState</a></div><div class="ttdeci">void initDebugState(Qureg qureg)</div><div class="ttdoc">Initialises qureg to be in the un-normalised, non-physical state with with n-th complex amplitude (2n...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8c_source.html#l01057">QuEST.c:1057</a></div></div>
<div class="ttc" id="agroup__decoherence_html_ga3e39405eb2ce05ce4bb88c0f00dace45"><div class="ttname"><a href="group__decoherence.html#ga3e39405eb2ce05ce4bb88c0f00dace45">mixDamping</a></div><div class="ttdeci">void mixDamping(Qureg qureg, const int targetQubit, qreal prob)</div><div class="ttdoc">Mixes a density matrix qureg to induce single-qubit amplitude damping (decay to 0 state).</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8c_source.html#l00935">QuEST.c:935</a></div></div>
<div class="ttc" id="astructQureg_html"><div class="ttname"><a href="structQureg.html">Qureg</a></div><div class="ttdoc">Represents a system of qubits.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00160">QuEST.h:160</a></div></div>
<div class="ttc" id="agroup__decoherence_html_ga14282bdb1dc65760ca9ecbe6305eb770"><div class="ttname"><a href="group__decoherence.html#ga14282bdb1dc65760ca9ecbe6305eb770">mixTwoQubitDephasing</a></div><div class="ttdeci">void mixTwoQubitDephasing(Qureg qureg, int qubit1, int qubit2, qreal prob)</div><div class="ttdoc">Mixes a density matrix qureg to induce two-qubit dephasing noise.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8c_source.html#l00912">QuEST.c:912</a></div></div>
<div class="ttc" id="astructComplexMatrix2_html_a3ea98d545b67a190ee6abe936c72076f"><div class="ttname"><a href="structComplexMatrix2.html#a3ea98d545b67a190ee6abe936c72076f">ComplexMatrix2::real</a></div><div class="ttdeci">qreal real[2][2]</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00116">QuEST.h:116</a></div></div>
<div class="ttc" id="atest__decoherence_8cpp_html_ae828ab685c6e8b0cec317b7a6c46963a"><div class="ttname"><a href="test__decoherence_8cpp.html#ae828ab685c6e8b0cec317b7a6c46963a">PREPARE_TEST</a></div><div class="ttdeci">#define PREPARE_TEST(qureg, ref)</div><div class="ttdoc">Prepares a density matrix in the debug state, and the reference QMatrix.</div><div class="ttdef"><b>Definition:</b> <a href="test__decoherence_8cpp_source.html#l00009">test_decoherence.cpp:9</a></div></div>
<div class="ttc" id="agroup__testutilities_html_gabbc686f5f40eff22e08a2b2012ac4e41"><div class="ttname"><a href="group__testutilities.html#gabbc686f5f40eff22e08a2b2012ac4e41">QMatrix</a></div><div class="ttdeci">std::vector< std::vector< qcomp > > QMatrix</div><div class="ttdoc">A complex square matrix.</div><div class="ttdef"><b>Definition:</b> <a href="utilities_8hpp_source.html#l00049">utilities.hpp:49</a></div></div>
<div class="ttc" id="agroup__testutilities_html_ga731a7a71755c25ebe96e742e3fbe5812"><div class="ttname"><a href="group__testutilities.html#ga731a7a71755c25ebe96e742e3fbe5812">toComplexMatrix2</a></div><div class="ttdeci">ComplexMatrix2 toComplexMatrix2(QMatrix qm)</div><div class="ttdoc">Returns a ComplexMatrix2 copy of QMatix qm.</div><div class="ttdef"><b>Definition:</b> <a href="utilities_8cpp_source.html#l00812">utilities.cpp:812</a></div></div>
<div class="ttc" id="agroup__testutilities_html_ga35add15146aa606b256df79334b867d5"><div class="ttname"><a href="group__testutilities.html#ga35add15146aa606b256df79334b867d5">sublists</a></div><div class="ttdeci">Catch::Generators::GeneratorWrapper< int * > sublists(int *list, int len, int sublen)</div><div class="ttdoc">Returns a Catch2 generator of every length-sublen sublist of length-len list, in increasing lexograph...</div><div class="ttdef"><b>Definition:</b> <a href="utilities_8cpp_source.html#l01074">utilities.cpp:1074</a></div></div>
<div class="ttc" id="astructQureg_html_ad08dff5316b8937f4b2a1417591543dc"><div class="ttname"><a href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">Qureg::numQubitsRepresented</a></div><div class="ttdeci">int numQubitsRepresented</div><div class="ttdoc">The number of qubits represented in either the state-vector or density matrix.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00165">QuEST.h:165</a></div></div>
<div class="ttc" id="agroup__decoherence_html_ga97d563fa8f4bc51f720bbb653f5480b3"><div class="ttname"><a href="group__decoherence.html#ga97d563fa8f4bc51f720bbb653f5480b3">mixDensityMatrix</a></div><div class="ttdeci">void mixDensityMatrix(Qureg combineQureg, qreal otherProb, Qureg otherQureg)</div><div class="ttdoc">Modifies combineQureg to become (1-prob)combineProb + prob otherQureg.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8c_source.html#l00770">QuEST.c:770</a></div></div>
<div class="ttc" id="agroup__type_html_ga3392816c0643414165c2f5caeec17df0"><div class="ttname"><a href="group__type.html#ga3392816c0643414165c2f5caeec17df0">createQureg</a></div><div class="ttdeci">Qureg createQureg(int numQubits, QuESTEnv env)</div><div class="ttdoc">Create a Qureg object representing a set of qubits which will remain in a pure state.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8c_source.html#l00034">QuEST.c:34</a></div></div>
<div class="ttc" id="agroup__testutilities_html_ga50616e813b0d0aa4f8220785d780cdff"><div class="ttname"><a href="group__testutilities.html#ga50616e813b0d0aa4f8220785d780cdff">getKroneckerProduct</a></div><div class="ttdeci">QMatrix getKroneckerProduct(QMatrix a, QMatrix b)</div><div class="ttdoc">Returns the kronecker product of a and b, where a and b are square but possibly differently-sized com...</div><div class="ttdef"><b>Definition:</b> <a href="utilities_8cpp_source.html#l00169">utilities.cpp:169</a></div></div>
<div class="ttc" id="agroup__decoherence_html_ga9a77f84e1aa7d25d036b14d7d0cd8b61"><div class="ttname"><a href="group__decoherence.html#ga9a77f84e1aa7d25d036b14d7d0cd8b61">mixPauli</a></div><div class="ttdeci">void mixPauli(Qureg qureg, int qubit, qreal probX, qreal probY, qreal probZ)</div><div class="ttdoc">Mixes a density matrix qureg to induce general single-qubit Pauli noise.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8c_source.html#l00955">QuEST.c:955</a></div></div>
<div class="ttc" id="agroup__testutilities_html_ga6ccbb15b0f234e926be96a153181b63a"><div class="ttname"><a href="group__testutilities.html#ga6ccbb15b0f234e926be96a153181b63a">getZeroMatrix</a></div><div class="ttdeci">QMatrix getZeroMatrix(size_t dim)</div><div class="ttdoc">Returns a dim-by-dim square complex matrix, initialised to all zeroes.</div><div class="ttdef"><b>Definition:</b> <a href="utilities_8cpp_source.html#l00143">utilities.cpp:143</a></div></div>
<div class="ttc" id="agroup__testutilities_html_ga45cc399adad2e2a67b0124851189fae5"><div class="ttname"><a href="group__testutilities.html#ga45cc399adad2e2a67b0124851189fae5">areEqual</a></div><div class="ttdeci">bool areEqual(QVector a, QVector b)</div><div class="ttdoc">Returns true if the absolute value of the difference between every amplitude in vectors a and b is le...</div><div class="ttdef"><b>Definition:</b> <a href="utilities_8cpp_source.html#l00387">utilities.cpp:387</a></div></div>
<div class="ttc" id="agroup__type_html_ga93e55b6650b408abb30a1d4a8bce757c"><div class="ttname"><a href="group__type.html#ga93e55b6650b408abb30a1d4a8bce757c">createDensityQureg</a></div><div class="ttdeci">Qureg createDensityQureg(int numQubits, QuESTEnv env)</div><div class="ttdoc">Create a Qureg for qubits which are represented by a density matrix, and can be in mixed states.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8c_source.html#l00048">QuEST.c:48</a></div></div>
<div class="ttc" id="agroup__testutilities_html_ga731c2de4d491629d806a03e0aea2f3a3"><div class="ttname"><a href="group__testutilities.html#ga731c2de4d491629d806a03e0aea2f3a3">applyReferenceOp</a></div><div class="ttdeci">void applyReferenceOp(QVector &state, int *ctrls, int numCtrls, int *targs, int numTargs, QMatrix op)</div><div class="ttdoc">Modifies the state-vector state to be the result of applying the multi-target operator matrix op,...</div><div class="ttdef"><b>Definition:</b> <a href="utilities_8cpp_source.html#l00573">utilities.cpp:573</a></div></div>
<div class="ttc" id="autilities_8hpp_html"><div class="ttname"><a href="utilities_8hpp.html">utilities.hpp</a></div></div>
<div class="ttc" id="agroup__unittest_html_ga6b6a9b1ee734f0ab27cbfbb575bc7b77"><div class="ttname"><a href="group__unittest.html#ga6b6a9b1ee734f0ab27cbfbb575bc7b77">TEST_CASE</a></div><div class="ttdeci">TEST_CASE("mixDamping", "[decoherence]")</div><div class="ttdef"><b>Definition:</b> <a href="test__decoherence_8cpp_source.html#l00023">test_decoherence.cpp:23</a></div></div>
<div class="ttc" id="agroup__decoherence_html_ga65b4c0944090fae78a37ba3b94811ace"><div class="ttname"><a href="group__decoherence.html#ga65b4c0944090fae78a37ba3b94811ace">mixMultiQubitKrausMap</a></div><div class="ttdeci">void mixMultiQubitKrausMap(Qureg qureg, int *targets, int numTargets, ComplexMatrixN *ops, int numOps)</div><div class="ttdoc">Apply a general N-qubit Kraus map to a density matrix, as specified by at most (2N)^2 Kraus operators...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8c_source.html#l00986">QuEST.c:986</a></div></div>
<div class="ttc" id="astructComplexMatrix2_html"><div class="ttname"><a href="structComplexMatrix2.html">ComplexMatrix2</a></div><div class="ttdoc">Represents a 2x2 matrix of complex numbers.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00114">QuEST.h:114</a></div></div>
<div class="ttc" id="agroup__decoherence_html_ga556fe013915bca4626367d98db948f5e"><div class="ttname"><a href="group__decoherence.html#ga556fe013915bca4626367d98db948f5e">mixDepolarising</a></div><div class="ttdeci">void mixDepolarising(Qureg qureg, const int targetQubit, qreal prob)</div><div class="ttdoc">Mixes a density matrix qureg to induce single-qubit homogeneous depolarising noise.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8c_source.html#l00924">QuEST.c:924</a></div></div>
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