Function quest_sys::multiControlledPhaseFlip

pub unsafe extern "C" fn multiControlledPhaseFlip(
    qureg: Qureg,
    controlQubits: *mut c_int,
    numControlQubits: c_int
)

Apply the multiple-qubit controlled phase flip gate, also known as the multiple-qubit controlled pauliZ gate. For each state, if all control qubits have value one, multiply the amplitude of that state by -1. This applies the many-qubit unitary: \f[ \begin{pmatrix} 1 \ & 1 \
& & \ddots \ & & & 1 \ & & & & -1 \end{pmatrix} \f] on the control qubits.

\f[ \begin{tikzpicture}[scale=.5] \node[draw=none] at (-3.5, 2) {controls};

\node[draw=none] at (0, 6) {$\vdots$}; \draw (0, 5) – (0, 4);

\draw (-2, 4) – (2, 4); \draw[fill=black] (0, 4) circle (.2); \draw (0, 4) – (0, 2);

\draw (-2, 2) – (2, 2); \draw[fill=black] (0, 2) circle (.2); \draw (0, 2) – (0, 0);

\draw (-2,0) – (2, 0); \draw[fill=black] (0, 0) circle (.2); \end{tikzpicture} \f]

@ingroup unitary @param[in,out] qureg object representing the set of all qubits @param[in] controlQubits array of input qubits @param[in] numControlQubits number of input qubits @throws invalidQuESTInputError()

• if \p numControlQubits is outside [1, \p qureg.numQubitsRepresented)
• if any qubit in \p controlQubits is outside [0, \p qureg.numQubitsRepresented)
• if any qubit in \p qubits is repeated @author Tyson Jones