Experimental Pauli-frame randomization on a superconducting qubit

One proposal to address coherent and non-Markovian errors in quantum computing systems is to randomize circuits rendering the errors incoherent and leaving the computation unaffected. Here we demonstrate circuit randomization in a superconducting circuit system. We use high-accuracy gate set tomography to demonstrate that without randomization, errors experienced by our experiment have coherent character and that with randomization these errors are rendered incoherent. We also demonstrate that randomization suppresses signatures of non-Markovian evolution to statistically insignificant levels.

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