pygsti.unitary_to_pauligate_2q

pygsti.unitary_to_pauligate_2q(U)

Get the linear operator on (vectorized) density matrices corresponding to a 2-qubit unitary operator on states.

Parameters:U (numpy array) – A 4x4 array giving the action of the unitary on a state in the sigma-z basis.
Returns:The operator on density matrices that have been vectorized as length-16 vectors in the Pauli-product basis. Array has shape == (16,16).
Return type:numpy array