Function getMixedDensityMatrix

tests/deprecated/test_utilities.cpp:780–790

}

QMatrix getMixedDensityMatrix(vector<qreal> probs, vector<QVector> states) {
    DEMAND( probs.size() == states.size() );
    DEMAND( probs.size() >= 1 );
    
    QMatrix matr = getZeroMatrix(states[0].size());
    
    for (size_t i=0; i<probs.size(); i++)
        matr += probs[i] * getPureDensityMatrix(states[i]);
        
    return matr;
}

QVector getDFT(QVector in) {
    REQUIRE( in.size() > 0 );