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Spatiotemporally-correlated quasiparticle-induced transitions in arrays of transmon qubits

ORAL

Abstract

Spatiotemporally-correlated errors present a significant challenge for quantum error-correction schemes. Recent work has identified burst events, attributed to energy deposited in the device by muons and radioactive decay products from the environment, that result in correlated errors effecting millimeter-scale regions of a superconducting processor with millisecond-scale duration. Here we probe these events using an array of offset-charge-sensitive transmons. Observation of a spatiotemporally-correlated increase of quasiparticle-induced charge-parity transitions that accompany the offset-charge signatures of the aforementioned burst events would provide a direct link between these errors and a nonequilibrium quasiparticle population. These devices also serve as a testbed for strategies to mitigate high-energy bursts of quasiparticle-induced decoherence in superconducting qubits.

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Presenters

  • Kyle Serniak

    MIT Lincoln Lab, MIT Lincoln Laboratory

Authors

  • Kyle Serniak

    MIT Lincoln Lab, MIT Lincoln Laboratory

  • Greg Calusine

    MIT Lincoln Laboratory, MIT Lincoln Lab

  • Patrick M Harrington

    Massachusetts Institute of Technology MI, Department of Electrical Engineering & Computer Science and Department of Physics, Massachusetts Institute of Technology, Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology

  • Max Hays

    Yale University, Department of Electrical Engineering & Computer Science and Department of Physics, Massachusetts Institute of Technology

  • Thomas M Hazard

    MIT Lincoln Lab, MIT Lincoln Laboratory

  • David K Kim

    MIT Lincoln Lab, MIT Lincoln Laboratory

  • Alexander Melville

    MIT Lincoln Laboratory, MIT Lincoln Lab

  • Bethany M Niedzielski

    MIT Lincoln Lab, MIT Lincoln Laboratory

  • Jonilyn L Yoder

    MIT Lincoln Lab, MIT Lincoln Laboratory

  • Mollie E Schwartz

    MIT Lincoln Lab, MIT Lincoln Laboratory

  • William D Oliver

    Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology Research Laboratory of Electronics, MIT Lincoln Laboratory and Department of Electrical Engineering & Computer Science and Department of Physics, Massachusetts Institute of Technology