pygsti.tools.errgenproptools.stabilizer_pauli_expectation_correction

pygsti.tools.errgenproptools.stabilizer_pauli_expectation_correction#

stabilizer_pauli_expectation_correction(errorgen_dict, tableau, pauli, order=1, truncation_threshold=1e-14)#

Compute the kth-order correction to the expectation value of the specified pauli.

Parameters:

  • errorgen_dict (dict) – Dictionary whose keys are LocalStimErrorgenLabel and whose values are corresponding rates.

  • tableau (stim.Tableau) – Stim tableau corresponding to a particular stabilizer state being measured.

  • pauli (stim.PauliString) – Pauli operator to compute expectation value correction for.

  • order (int, optional (default 1)) – Order of the correction (i.e. order of the taylor series expansion for the exponentiated error generator) to compute.

  • truncation_threshold (float, optional (default 1e-14)) – Optional threshold used to truncate corrections whose corresponding rates are below this value.

Returns:

correction – float corresponding to the correction to the expectation value for the selected pauli operator induced by the error generator (to specified order).

Return type:

float