Projectors

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

Topics
	PauliStrSum
	Functions for pre- or post-multiplying weighted sums of Pauli tensors upon a density matrix.

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!

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

• leftapplyCompMatr1()
• applyMultiQubitProjector()

Definition at line 584 of file multiplication.cpp.

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

Referenced by TEST_CASE().

leftapplyQubitProjector()

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

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

• leftapplyCompMatr1()
• applyQubitProjector()

Definition at line 575 of file multiplication.cpp.

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

Referenced by TEST_CASE().

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 605 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(util_getVector(qubits, numQubits), qureg);
    auto outcomeVec = util_getVector(outcomes, numQubits);
    localiser_statevec_multiQubitProjector(qureg, qubitVec, outcomeVec, prob);
}

Referenced by TEST_CASE().

rightapplyQubitProjector()

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

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()
• applyQubitProjector()

Definition at line 595 of file multiplication.cpp.

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

Referenced by TEST_CASE().