Mitigating measurement errors in multi-qubit experiments

Understand

Reducing measurement errors in multi-qubit quantum devices is critical for performing any quantum algorithm.

• Here we show how to mitigate measurement errors by a classical post-processing of the measured outcomes.
• Our techniques apply to any experiment where measurement outcomes are used for computing expected values of observables.
• Two error mitigation schemes are presented based on tensor product and correlated Markovian noise models.