Properties

Functions for calculating single-state properties like normalisation and purity. More...

Functions
qreal	calcPurity (Qureg qureg)
qreal	calcTotalProb (Qureg qureg)

Detailed Description

Functions for calculating single-state properties like normalisation and purity.

Function Documentation

calcPurity()

qreal calcPurity

(

Qureg

qureg

)

Note

Documentation for this function or struct is under construction!

Attention

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

Definition at line 288 of file calculations.cpp.

                              {
    validate_quregFields(qureg, __func__);
 
    // assuming Hermiticity, Tr(rho^2) = sum_ij |rho_ij|^2,
    // and Tr(|x><x|x><x|) = (sum_i |x_i|^2)^2
    qreal prob = localiser_statevec_calcTotalProb(qureg);
    return (qureg.isDensityMatrix)? prob : prob * prob;
}

Referenced by TEST_CASE(), TEST_CASE(), TEST_CASE(), and TEST_CASE().

calcTotalProb()

qreal calcTotalProb

(

Qureg

qureg

)

Note

Documentation for this function or struct is under construction!

Attention

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

Definition at line 273 of file calculations.cpp.

                                 {
    validate_quregFields(qureg, __func__);
 
    return (qureg.isDensityMatrix)?
        localiser_densmatr_calcTotalProb(qureg): 
        localiser_statevec_calcTotalProb(qureg);
}

Referenced by setQuregToRenormalized(), TEST_CASE(), TEST_CASE(), TEST_CASE(), and TEST_CASE().