pauli_liouville2chi

forest.benchmarking.operator_tools.superoperator_transformations.pauli_liouville2chi(pl_matrix: numpy.ndarray) → numpy.ndarray

Converts a pauli_liouville matrix into a chi matrix. (operators with small norm may be excluded)

Parameters:pl_matrix – a dim**2 by dim**2 pauli_liouville matrix Returns:a dim**2 by dim**2 process matrix