Function controlledCompactUnitary

pub unsafe extern "C" fn controlledCompactUnitary(
    qureg: Qureg,
    controlQubit: c_int,
    targetQubit: c_int,
    alpha: Complex,
    beta: Complex,
)

Apply a controlled unitary (single control, single target) parameterised by two given complex scalars. Given valid complex numbers \f$\alpha\f$ and \f$\beta\f$, applies the two-qubit unitary \f[ \begin{pmatrix} 1 \ & 1 \ & & \alpha & -\beta^* \ & & \beta & \alpha^* \end{pmatrix} \f] to the control and target qubits. Valid \f$\alpha\f$, \f$\beta\f$ satisfy \f$|\alpha|^2 + |\beta|^2 = 1\f$. The target unitary is general up to a global phase factor.

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@see

• compactUnitary()
• controlledUnitary()
• multiControlledUnitary()
• multiStateControlledUnitary()

@ingroup unitary @param[in,out] qureg object representing the set of all qubits @param[in] controlQubit apply the target unitary if this qubit has value 1 @param[in] targetQubit qubit on which to apply the target unitary @param[in] alpha complex unitary parameter (row 1, column 1) @param[in] beta complex unitary parameter (row 2, column 1) @throws invalidQuESTInputError()

• if either \p controlQubit or \p targetQubit are outside [0, \p qureg.numQubitsRepresented)
• if \p controlQubit and \p targetQubit are equal
• if \p alpha, \p beta don’t satisfy |alpha|^2 + |beta|^2 = 1 @author Ania Brown (state-vector) @author Tyson Jones (density matrix, doc)