Fast parametrically driven entangling gates in superconducting circuits using a tunable coupler

ORAL

Abstract

A major challenge in realizing scalable quantum computers is the optimization of two-qubit entangling gates. In current superconducting architectures, ZZ crosstalk introduces unwanted entanglement while slow gates push fidelities down due to decoherence. It is thus desirable to make entangling gates as fast as possible while maintaining control over multi-qubit interactions. In this work we demonstrate a tunable coupler that can be flux biased to mitigate ZZ crosstalk while allowing fast parametrically driven two-qubit entangling gates between far-detuned fixed-frequency transmons.

*This work was supported by Army Research Office Grant No. W911NF1910016 and by EPiQC, an NSF Expedition in Computing, under grant CCF-1730449.

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Presenters

  • Charles Guinn

    • Princeton University

Authors

  • Charles Guinn

    • Princeton University

  • Sara F Sussman

    • Princeton University

  • Pranav S Mundada

    • Q-CTRL
    • Princeton University

  • Andrei Vrajitoarea

    • Princeton University
    • University of Chicago

  • Catherine Leroux

    • Universite de Sherbrooke
    • Institut quantique & Département de Physique, Université de Sherbrooke, Sherbrooke J1K2R1, Quebec, Canada

  • Alexander P Place

    • Princeton University

  • Camille Le Calonnec

    • Universite de Sherbrooke

  • Agustin Di Paolo

    • Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
    • Universite de Sherbrooke
    • MIT
    • Massachusetts Institute of Technology MIT
    • Research Laboratory of Electronics, Massachusetts Institute of Technology
    • Massachusetts Institute of Technology

  • Alexandru Petrescu

    • Universite de Sherbrooke

  • Alexandre Blais

    • Universite de Sherbrooke
    • Institut quantique & Département de Physique, Université de Sherbrooke, Sherbrooke J1K2R1, Quebec, Canada

  • Andrew A Houck

    • Princeton University