quest_sys

Function phaseShift

Source 
pub unsafe extern "C" fn phaseShift(
    qureg: Qureg,
    targetQubit: c_int,
    angle: f64,
)
Expand description

Shift the phase between \f$ |0\rangle \f$ and \f$ |1\rangle \f$ of a single qubit by a given angle.

This is equivalent to a Z-axis rotation of the Bloch-sphere up to a global phase factor. For angle \f$\theta\f$, this effects single-qubit unitary \f[ \begin{pmatrix} 1 & 0 \ 0 & \exp(i \theta) \end{pmatrix} \f] with circuit diagram @htmlonly

@endhtmlonly

@see

  • controlledPhaseShift()
  • multiControlledPhaseShift()

@ingroup unitary @param[in,out] qureg object representing the set of all qubits @param[in] targetQubit qubit to undergo a phase shift @param[in] angle amount by which to shift the phase in radians @throws invalidQuESTInputError()

  • \p targetQubit is outside [0, \p qureg.numQubitsRepresented). @author Tyson Jones