Dephasing in tunable Xmon transmon qubits

ORAL

Abstract

One of the key challenges in superconducting qubits is maintaining coherent control during operation. For our frequency-tunable architecture, the environment at a broad range of frequencies becomes relevant for the success rate of quantum algorithms. I will present Carr-Purcell-Meiboom-Gill measurements aimed at identifying phase noise and its contribution to gate error away from the flux-insensitive point.

Presenters

  • Rami Barends

    • Google Inc - Santa Barbara

Authors

  • Rami Barends

    • Google Inc - Santa Barbara
  • Zijun Chen

    • Google Inc - Santa Barbara
  • Paul Klimov

    • Google Inc - Santa Barbara
  • Julian Kelly

    • Google Inc - Santa Barbara
    • Google
  • Andrew Dunsworth

    • Physics, Univ of California - Santa Barbara
    • UC Santa Barbara
    • Univ of California - Santa Barbara
    • UCSB
    • University of California - Santa Barbara
    • Physics, University of California, Santa Barbara
  • Ben Chiaro

    • Physics, Univ of California - Santa Barbara
    • UC Santa Barbara
    • Univ of California - Santa Barbara
    • UCSB
    • University of California - Santa Barbara
    • Physics, University of California, Santa Barbara
  • Anthony Megrant

    • Google Inc - Santa Barbara
  • Amit Vainsencher

    • Google Inc - Santa Barbara
  • Evan Jeffrey

    • Google Inc - Santa Barbara
  • John Martinis

    • Google
    • Google Inc - Santa Barbara
    • Google Inc.
    • UC Santa Barbara and Google