choi2kraus

forest.benchmarking.operator_tools.superoperator_transformations.choi2kraus(choi: numpy.ndarray, tol: float = 1e-09) → List[numpy.ndarray]

Converts a Choi matrix into a list of Kraus operators. (operators with small norm may be excluded)

Parameters:

• choi – a dim**2 by dim**2 choi matrix
• tol – optional threshold parameter for eigenvalues/kraus ops to be discarded

Returns:

list of Kraus operators