CompleteMeasFitter

class CompleteMeasFitter(results, state_labels, qubit_list=None, circlabel='')

Bases: object

Deprecated: Measurement correction fitter for a full calibration

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

A wrapper for the tensored fitter

Warning

This class is not a public API. The internals are not stable and will likely change. It is used solely for the measurement_error_mitigation_cls kwarg of the QuantumInstance class's constructor (as a class not an instance). Anything outside of that usage does not have the normal user-facing API stability.

Deprecated since version 0.24.0: The class qiskit.utils.mitigation.fitters.CompleteMeasFitter is deprecated as of qiskit-terra 0.24.0. It will be removed no earlier than 3 months after the release date. For code migration guidelines, visit https://qisk.it/qi_migration.

Parameters

• results -- the results of running the measurement calibration circuits. If this is None the user will set a calibration matrix later.

• state_labels (List[str]) -- list of calibration state labels returned from measurement_calibration_circuits. The output matrix will obey this ordering.

• qubit_list (List[int]) -- List of the qubits (for reference and if the subset is needed). If None, the qubit_list will be created according to the length of state_labels[0].

• circlabel (str) -- if the qubits were labeled.

Methods

add_data	Add measurement calibration data
readout_fidelity	Based on the results, output the readout fidelity which is the normalized trace of the calibration matrix
subset_fitter	Return a fitter object that is a subset of the qubits in the original list.

Attributes

cal_matrix

Return cal_matrix.

filter

Return a measurement filter using the cal matrix.

qubit_list

Return list of qubits.

state_labels

Return state_labels.