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.

*This research was supported by the Department of Defense (DOD) under Air Force Contract No. FA8702-15-D-0001. The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsements, either expressed or implied, of the DOD or the U.S. Government.

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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