Examining the effect of various radioactive sources on superconducting qubits protected through gap-engineering

ORAL

Abstract

Impacts from high-energy particles have been demonstrated to cause correlated errors in superconducting qubits by increasing the quasiparticle density in the Josephson junction (JJ) leads. These correlated errors are particularly harmful as they cannot be remedied via conventional error correcting codes. It was recently demonstrated that these correlated errors can be reduced or eliminated by engineering the difference in superconducting gap across the JJ to be larger than the qubit frequency. In order to test the efficacy of this strategy we have exposed this type of "gap-engineered" qubits to a variety of radioactive sources, scanning both particle type and energy deposited in the substrate. We will describe our progress in this measurement campaign and its implications for the future of preventing correlated errors.

*This research is sponsored by the U.S. Army Research Office under Award No. W911NF-23-1-0045 (Extensible and Modular Advanced Qubits), and 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 U.S. Government.

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Presenters

  • Doug Pinckney

    • Massachusetts Institute of Technology

Authors

  • Doug Pinckney

    • Massachusetts Institute of Technology

  • Patrick M Harrington

    • MIT
    • Massachusetts Institute of Technology

  • Kate Azar

    • Massachusetts Institute of Technology
    • MIT
    • MIT Lincoln Laboratory

  • Hannah P Binney

    • Massachusetts Institute of Technology

  • Aranya Goswami

    • Massachusetts Institute of Technology

  • Max Hays

    • MIT
    • Massachusetts Institute of Technology (MIT)
    • Massachusetts Institute of Technology

  • Jiatong Yang

    • MIT
    • Massachusetts Institute of Technology

  • Wouter Van De Pontseele

    • Massachusetts Institute of Technology

  • Felipe Contipelli

    • MIT Lincoln Laboratory

  • Renée DePencier Piñero

    • MIT Lincoln Laboratory
    • Lincoln Laboratory, MIT

  • Hannah M Stickler

    • MIT Lincoln Laboratory

  • Mallika T Randeria

    • MIT Lincoln Laboratory

  • Thomas W McJunkin

    • Johns Hopkins University Applied Physics Laboratory

  • Alan W Hunt

    • Johns Hopkins University Applied Physics Laboratory

  • Yenuel S Jones-Alberty

    • Johns Hopkins University Applied Physics Laboratory

  • Kevin M Schultz

    • Johns Hopkins University Applied Physics Laboratory

  • Bethany M Niedzielski

    • MIT Lincoln Laboratory
    • Lincoln Laboratory, Massachusetts Institute of Technology

  • Michael Gingras

    • MIT Lincoln Laboratory

  • Mollie E Schwartz

    • MIT Lincoln Laboratory
    • Lincoln Laboratory, Massachusetts Institute of Technology

  • Jeffrey A Grover

    • Massachusetts Institute of Technology (MIT)
    • Massachusetts Institute of Technology
    • MIT

  • Kyle Serniak

    • MIT Lincoln Laboratory
    • Lincoln Laboratory, Massachusetts Institute of Technology

  • Joseph A Formaggio

    • Massachusetts Institute of Technology

  • William D Oliver

    • Massachusetts Institute of Technology
    • Massachusetts Institute of Technology (MIT)