# TensoredMeasFitter¶

class TensoredMeasFitter(results, mit_pattern, substate_labels_list=None, circlabel='')[source]

Bases: object

Measurement correction fitter for a tensored calibration.

Initialize a measurement calibration matrix from the results of running the circuits returned by measurement_calibration_circuits.

Parameters
• results (Union[Result, List[Result]]) – the results of running the measurement calibration circuits. If this is None, the user will set calibration matrices later.

• mit_pattern (List[List[int]]) – qubits to perform the measurement correction on, divided to groups according to tensors

• substate_labels_list (Optional[List[List[str]]]) – for each calibration matrix, the labels of its rows and columns. If None, the labels are ordered lexicographically

• circlabel (str) – if the qubits were labeled

Raises

ValueError – if the mit_pattern doesn’t match the substate_labels_list

Methods

 add_data Add measurement calibration data plot_calibration Plot one of the calibration matrices (2D color grid plot). readout_fidelity Based on the results, output the readout fidelity, which is the average of the diagonal entries in the calibration matrices.

Attributes

cal_matrices

Return cal_matrices.

filter

Return a measurement filter using the cal matrices.

nqubits

Return _qubit_list_sizes.

substate_labels_list

Return _substate_labels_list.