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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.

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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)