Projectors

Functions for pre- or post-multiplying projectors upon density matrices. More...

Functions
void	leftapplyMultiQubitProjector (Qureg qureg, int *qubits, int *outcomes, int numQubits)
void	leftapplyQubitProjector (Qureg qureg, int qubit, int outcome)
void	rightapplyMultiQubitProjector (Qureg qureg, int *qubits, int *outcomes, int numQubits)
void	rightapplyQubitProjector (Qureg qureg, int qubit, int outcome)

Detailed Description

Functions for pre- or post-multiplying projectors upon density matrices.

Function Documentation

leftapplyMultiQubitProjector()

void leftapplyMultiQubitProjector	(	Qureg	qureg,
		int *	qubits,
		int *	outcomes,
		int	numQubits )

Note

Documentation for this function or struct is under construction!

See also

• leftapplyCompMatr1()
• applyMultiQubitProjector()

Definition at line 593 of file multiplication.cpp.

                                                                                          {
    validate_quregFields(qureg, __func__);
    validate_targets(qureg, qubits, numQubits, __func__);
    validate_measurementOutcomesAreValid(outcomes, numQubits, __func__);
 
    qreal prob = 1;
    auto qubitVec = lists_getList64(qubits, numQubits);
    auto outcomeVec = lists_getList64(outcomes, numQubits);
    localiser_statevec_multiQubitProjector(qureg, qubitVec, outcomeVec, prob);
}

Referenced by leftapplyMultiQubitProjector().

leftapplyQubitProjector()

void leftapplyQubitProjector	(	Qureg	qureg,
		int	qubit,
		int	outcome )

Note

Documentation for this function or struct is under construction!

See also

• leftapplyCompMatr1()
• applyQubitProjector()

Definition at line 584 of file multiplication.cpp.

                                                                  {
    validate_quregFields(qureg, __func__);
    validate_target(qureg, qubit, __func__);
    validate_measurementOutcomeIsValid(outcome, __func__); 
 
    qreal prob = 1;
    localiser_statevec_multiQubitProjector(qureg, lists_getList64({qubit}), lists_getList64({outcome}), prob);
}

rightapplyMultiQubitProjector()

void rightapplyMultiQubitProjector	(	Qureg	qureg,
		int *	qubits,
		int *	outcomes,
		int	numQubits )

Note

Documentation for this function or struct is under construction!

Attention

This function's input validation has not yet been unit tested, so erroneous usage may produce unexpected output. Please use with caution!

See also

• rightapplyCompMatr1()
• applyMultiQubitProjector()

Definition at line 615 of file multiplication.cpp.

                                                                                           {
    validate_quregFields(qureg, __func__);
    validate_quregIsDensityMatrix(qureg, __func__);
    validate_targets(qureg, qubits, numQubits, __func__);
    validate_measurementOutcomesAreValid(outcomes, numQubits, __func__);
 
    qreal prob = 1;
    auto qubitVec = util_getBraQubits(lists_getList64(qubits, numQubits), qureg);
    auto outcomeVec = lists_getList64(outcomes, numQubits);
    localiser_statevec_multiQubitProjector(qureg, qubitVec, outcomeVec, prob);
}

Referenced by rightapplyMultiQubitProjector().

rightapplyQubitProjector()

void rightapplyQubitProjector	(	Qureg	qureg,
		int	qubit,
		int	outcome )

Note

Documentation for this function or struct is under construction!

See also

• rightapplyCompMatr1()
• applyQubitProjector()

Definition at line 604 of file multiplication.cpp.

                                                                   {
    validate_quregFields(qureg, __func__);
    validate_quregIsDensityMatrix(qureg, __func__);
    validate_target(qureg, qubit, __func__);
    validate_measurementOutcomeIsValid(outcome, __func__); 
    
    qreal prob = 1;
    auto qubitList = lists_getList64({util_getBraQubit(qubit,qureg)});
    localiser_statevec_multiQubitProjector(qureg, qubitList, lists_getList64({outcome}), prob);
}