Engineering microwave-activated interactions for two-qubit gates and coherent-error suppression

ORAL

Abstract

Improving the extensibility of circuit-QED architectures is a necessary step towards developing functional large-scale quantum processors. In this context, the choice of two-qubit coupling and gate scheme is important, as it can place stringent design constraints at a larger scale. Tunable-qubit architectures offer some flexibility for mitigating frequency crowding and might have an edge in this respect. However, tunability often comes at the price of increased decoherence. In this talk, we introduce a transmon-qubit-based architecture that leverages always-on microwave drives to enhance or suppress multiqubit interactions. In the appropriate frame, the drive parameters appear as tunable knobs that are useful to enact two-qubit gates or idle with high-fidelity. We discuss ways to leverage such tunability alongside operating-regime tradeoffs that account for drive-induced decoherence.

*This research was funded in part by the Office of the Director of National Intelligence (ODNI), Intelligence Advanced Research Projects Activity (IARPA), and by the Under Secretary of Defense for Research and Engineering under Air Force Contract No. FA8702-15-D-0001. The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsements, either expressed or implied, of the ODNI, IARPA, the DoD, or the U.S. Government. This work was undertaken thanks in part to funding from NSERC, the Canada First Research Excellence Fund, and the ARO grant No. W911NF-18-1-0411.

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Presenters

  • 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

Authors

  • 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

  • Catherine Leroux

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

  • Junyoung An

    • Massachusetts Institute of Technology MI
    • Massachusetts Institute of Technology MIT

  • Youngkyu Sung

    • Massachusetts Institute of Technology MIT

  • Amir H Karamlou

    • Massachusetts Institute of Technology MI
    • Massachusetts Institute of Technology MIT
    • Massachusetts Institute of Technology

  • Sarah E Muschinske

    • Massachusetts Institute of Technology MI
    • Massachusetts Institute of Technology
    • Massachusetts Institute of Technology MIT

  • Amy Greene

    • Massachusetts Institute of Technology MI
    • Massachusetts Institute of Technology MIT

  • Roni Winik

    • Massachusetts Institute of Technology MIT

  • Thomas M Hazard

    • MIT Lincoln Lab
    • MIT Lincoln Laboratory

  • Kyle Serniak

    • MIT Lincoln Lab
    • MIT Lincoln Laboratory

  • Jeffrey A Grover

    • Massachusetts Institute of Technology MI
    • Massachusetts Institute of Technology Department of Electrical Engineering and Computer Science
    • Massachusetts Institute of Technology MIT
    • Northrop Grumman - Mission Systems
    • Massachusetts Institute of Technology

  • Simon Gustavsson

    • Massachusetts Institute of Technology MIT
    • Massachusetts Institute of Technology

  • Alexandre Blais

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

  • William D Oliver

    • Massachusetts Institute of Technology MIT
    • Massachusetts Institute of Technology Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology Research Laboratory of Electronics
    • MIT Lincoln Laboratory and Department of Electrical Engineering & Computer Science and Department of Physics, Massachusetts Institute of Technology