TensoredMeasFitter

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

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

Attributes

TensoredMeasFitter.cal_matrices	Return cal_matrices.
TensoredMeasFitter.filter	Return a measurement filter using the cal matrices.
TensoredMeasFitter.nqubits	Return _qubit_list_sizes.
TensoredMeasFitter.substate_labels_list	Return _substate_labels_list.

Methods

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