qit.utils.superop_to_choi

qit.utils.superop_to_choi(L)

Convert a Liouvillian superoperator to a Choi matrix.

Given a Liouvillian superoperator L operating on vectorized state operators, $L:A\otimes A\to B\otimes B$, returns the corresponding Choi matrix $C:A\otimes B\to A\otimes B$.

Parameters

L (array) – Liouvillian superoperator, shape == (b**2, a**2)

Returns

corresponding Choi matrix, shape == (a*b, a*b)

Return type

array