Towards autonomous digital feedback on a superconducting qubit

ORAL

Abstract

Quantum error correction requires conditional operations predicated on measurement results. Such feedback schemes in superconducting qubit systems, however, can be hardware intensive. They may require dedicated control hardware at ambient temperature and consume precious high-bandwidth connections between temperature stages. Here we present preliminary data on the state preparation and stabilization of a superconducting qubit where we keep the measurement information at the base temperature stage of the cryostat, and then use it to conditionally π pulse a qubit. This scheme avoids the aforementioned problems and can ease the development of stabilized quantum networks within a scalable architecture.

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Presenters

  • Ziyi Zhao

    • JILA and University of Colorado, Boulder

Authors

  • Ziyi Zhao

    • JILA and University of Colorado, Boulder

  • Eric Rosenthal

    • University of Colorado, Boulder
    • JILA and the University of Colorado, Boulder
    • JILA and University of Colorado, Boulder

  • Maxime Malnou

    • National Institute of Standards and Technology
    • NIST, Boulder

  • Christian M. F. Schneider

    • University of Innsbruck
    • Univ of Innsbruck
    • Experimental Physics, University of Innsbruck

  • Leila Vale

    • NIST, Boulder

  • Gene C. Hilton

    • NIST, Boulder
    • NIST Bouder

  • Gerhard Kirchmair

    • University of Innsbruck
    • Univ of Innsbruck
    • Institute for Experimental Physics, University of Innsbruck
    • Experimental Physics, University of Innsbruck

  • Jiansong Gao

    • National Institute of Standards and Technology
    • NIST, Boulder
    • National Institute of Standards and Technology Boulder

  • K. W. Lehnert

    • JILA and the University of Colorado, Boulder
    • JILA and University of Colorado, Boulder