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Diagnosis and Mitigation of Correlated Errors in Superconducting Qubits from Ionizing Radiation

ORAL

Abstract

Ionizing radiation causes momentary events of spatially-correlated superconducting qubit errors. We present the detection of multi-qubit correlated relaxation events in coincidence with cosmic ray secondary particles using scintillating detectors. These measurements identify the overall proportion of qubit errors caused by cosmic ray secondary particles versus all other sources of relaxation errors. The in-situ detection of radiation informs the sensitivity of each qubit to cosmic rays that penetrate the device substrate. Our findings reveal qubit device architectures that are less susceptible to the quasiparticles created by radiation absorption. The results of this cosmic ray coincidence measurement informs strategies that reduce the impact of ionizing radiation on quantum error correction schemes.

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Presenters

  • Patrick M Harrington

    Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology (MIT), Massachusetts Institute of Technology

Authors

  • Patrick M Harrington

    Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology (MIT), Massachusetts Institute of Technology

  • Mingyu Li

    Massachusetts Institute of Technology MIT

  • Wouter Van De Pontseele

    Massachussets Institute of Technology, Massachusetts Institute of Technology MIT

  • Daniel Mayer

    Massachusetts Institute of Technology MIT

  • David K Kim

    MIT Lincoln Lab, MIT Lincoln Laboratory

  • Bethany M Niedzielski

    MIT Lincoln Lab, MIT Lincoln Laboratory

  • Alexander Melville

    MIT Lincoln Laboratory

  • Mollie E Schwartz

    MIT Lincoln Laboratory

  • Jonilyn L Yoder

    MIT Lincoln Lab, MIT Lincoln Laboratory

  • Jeffrey A Grover

    Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology (MIT), Massachusetts Institute of Technology

  • Kyle Serniak

    MIT Lincoln Laboratory

  • Joseph A Formaggio

    Massachusetts Institute of Technology MIT

  • William D Oliver

    Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology (MIT), MIT Lincoln Laboratory, Massachusetts Institute of Technology (MIT), Massachusetts Institute of Technology, Massachusetts Institute of Technology, MIT Lincoln Laboratory