Measure

Testing utilities which evaluate measurements upon reference qvector and qmatrix states. These are slow, serial, un-optimised, defensively-designed routines. More...

Functions
vector< qreal >	getAllReferenceProbabilities (qmatrix state, vector< int > targets)
vector< qreal >	getAllReferenceProbabilities (qvector state, vector< int > targets)
qcomp	getReferenceExpectationValue (qmatrix state, PauliStr str)
qcomp	getReferenceExpectationValue (qmatrix state, PauliStrSum sum)
qcomp	getReferenceExpectationValue (qmatrix state, qmatrix observable)
qcomp	getReferenceExpectationValue (qvector state, PauliStr str)
qcomp	getReferenceExpectationValue (qvector state, PauliStrSum sum)
qcomp	getReferenceExpectationValue (qvector state, qmatrix observable)
qreal	getReferenceProbability (qmatrix state)
qreal	getReferenceProbability (qmatrix state, qindex basisIndex)
qreal	getReferenceProbability (qmatrix state, vector< int > targets, vector< int > outcomes)
qreal	getReferenceProbability (qvector state)
qreal	getReferenceProbability (qvector state, qindex basisIndex)
qreal	getReferenceProbability (qvector state, vector< int > targets, vector< int > outcomes)
qreal	getReferencePurity (qmatrix state)
qreal	getReferencePurity (qvector state)

Detailed Description

Testing utilities which evaluate measurements upon reference qvector and qmatrix states. These are slow, serial, un-optimised, defensively-designed routines.

Function Documentation

getAllReferenceProbabilities() [1/2]

vector< qreal > getAllReferenceProbabilities	(	qmatrix	state,
		vector< int >	targets )

Definition at line 108 of file measure.cpp.

{ return getAllRefProbsInner(state, targets); }

getAllReferenceProbabilities() [2/2]

vector< qreal > getAllReferenceProbabilities	(	qvector	state,
		vector< int >	targets )

Definition at line 107 of file measure.cpp.

{ return getAllRefProbsInner(state, targets); }

getReferenceExpectationValue() [1/6]

qcomp getReferenceExpectationValue	(	qmatrix	state,
		PauliStr	str )

Definition at line 50 of file measure.cpp.

{ return getRefExpecValInner(state, str); }

getReferenceExpectationValue() [2/6]

qcomp getReferenceExpectationValue	(	qmatrix	state,
		PauliStrSum	sum )

Definition at line 52 of file measure.cpp.

{ return getRefExpecValInner(state, sum); }

getReferenceExpectationValue() [3/6]

qcomp getReferenceExpectationValue	(	qmatrix	state,
		qmatrix	observable )

Definition at line 36 of file measure.cpp.

                                                                      {
    DEMAND( state.size() == observable.size() );
 
    return getTrace(observable * state);
}

getReferenceExpectationValue() [4/6]

qcomp getReferenceExpectationValue	(	qvector	state,
		PauliStr	str )

Definition at line 49 of file measure.cpp.

{ return getRefExpecValInner(state, str); }

getReferenceExpectationValue() [5/6]

qcomp getReferenceExpectationValue	(	qvector	state,
		PauliStrSum	sum )

Definition at line 51 of file measure.cpp.

{ return getRefExpecValInner(state, sum); }

getReferenceExpectationValue() [6/6]

qcomp getReferenceExpectationValue	(	qvector	state,
		qmatrix	observable )

Definition at line 30 of file measure.cpp.

                                                                      {
    DEMAND( state.size() == observable.size() );
 
    return getInnerProduct(state, observable * state);
}

getReferenceProbability() [1/6]

qreal getReferenceProbability

(

qmatrix

state

)

Definition at line 120 of file measure.cpp.

                                             {
 
    qreal out = 0;
    for (size_t i=0; i<state.size(); i++)
        out += std::real(state[i][i]);
 
    return out;
}

getReferenceProbability() [2/6]

qreal getReferenceProbability	(	qmatrix	state,
		qindex	basisIndex )

Definition at line 83 of file measure.cpp.

                                                                {
    DEMAND( basisIndex < (qindex) state.size() );
 
    qcomp elem = state[basisIndex][basisIndex];
    qreal prob = std::real(elem);
    return prob;
}

getReferenceProbability() [3/6]

qreal getReferenceProbability	(	qmatrix	state,
		vector< int >	targets,
		vector< int >	outcomes )

Definition at line 72 of file measure.cpp.

{ return getRefProbInner(state, targets, outcomes); }

getReferenceProbability() [4/6]

qreal getReferenceProbability

(

qvector

state

)

Definition at line 111 of file measure.cpp.

                                             {
 
    qreal out = 0;
    for (auto& elem : state)
        out += std::norm(elem);
 
    return out;
}

getReferenceProbability() [5/6]

qreal getReferenceProbability	(	qvector	state,
		qindex	basisIndex )

Definition at line 75 of file measure.cpp.

                                                                {
    DEMAND( basisIndex < (qindex) state.size() );
 
    qcomp elem = state[basisIndex];
    qreal prob = std::norm(elem);
    return prob;
}

getReferenceProbability() [6/6]

qreal getReferenceProbability	(	qvector	state,
		vector< int >	targets,
		vector< int >	outcomes )

Definition at line 71 of file measure.cpp.

{ return getRefProbInner(state, targets, outcomes); }

getReferencePurity() [1/2]

qreal getReferencePurity

(

qmatrix

state

)

Definition at line 130 of file measure.cpp.

                                        {
    
    return std::real(getTrace(state * state));
}

getReferencePurity() [2/2]

qreal getReferencePurity

(

qvector

state

)

Definition at line 134 of file measure.cpp.

                                        {
 
    return getReferencePurity(getOuterProduct(state, state));
}