0.19.0

New

• Adds M3Mitigation.cals_from_matrices and M3Mitigation.cals_to_matrices methods for integration with Qiskit.
• Makes mthree.circuits.balanced_cal_strings and mthree.circuits.balanced_cal_circuits public.

Fixed

• Fixed casting of values to int for expval operators specified in dict format.

0.18.0

New

• Sets the default number of calibration shots to the minimum of 10,000 or backend.configuration().max_shots.
• Better error message if the user passes in an empty dict for counts
• Calibration jobs are now done async so that one can send additional jobs, or do other processing while waiting.
• Calibration data can be saved at any time, not just when calling for cals.
• Saved calibration data now includes the time at which the calibration job was returned, along with the name of the backend it was run on.

0.17.2

The 0.17.1 release was accidentally from the main branch

0.17.1

Fixes

• There was a left over print statement in ProbDistribution for testing

0.17.0

New

• Adds the ability to execute jobs via the old Qobj path used by BaseBackend. This allows M3 to work with Qiskit Direct.

0.16.2

Fix an issue with version.

0.16.1

Fixes

• Fix an issue where passing a mapping to apply_correction resulted in an exception.

0.16.0

New

• Adds mthree.utils.expval, mthree.utils.stddev and mthree.utils.expval_and_stddev functions for working with Qiskit Counts objects.

Updated

• You can now pass mthree.utils.final_measurement_mapping a list of circuits to compute.
• You can pass mappings generated by mthree.utils.final_measurement_mapping directly into the M3Mitigator.cals_from_system and M3Mitigator.apply_correction for the qubits parameter.

0.15.0

• Allow users to select whether resets should be used on calibration circuits (#45).
• Fix issue where the auto method was not functioning properly (#47).
• Allow for passing custom expvals as dicts (#48).
• Show if M3 was compiled with openmp in the about function (#50).
• Better expectation value documentation since that has been greatly enhanced (#51).

0.14.0

• Allow obtaining mitigation overhead and shots from collection objects.
• Allow for passing lists of qubits to apply_correction when counts is also a list.
• Update documentation.