pygsti.tools.jamiolkowski.sums_of_negative_choi_eigenvalues

sums_of_negative_choi_eigenvalues(model)

Compute the amount of non-CP-ness of a model.

This is defined (somewhat arbitrarily) by summing the negative eigenvalues of the Choi matrix for each gate in model separately. This function is different from sum_of_negative_choi_eigenvalues() in that it returns sums separately for each operation of model.

Parameters:

model (Model) – The model to act on.

Returns:

each element == sum of the negative eigenvalues of the Choi matrix for the corresponding gate (as ordered by model.operations.iteritems()).

Return type:

list of floats