Error-detected state transfer and entanglement in a superconducting quantum network: Part 2

ORAL

Abstract

We use a quantum bus to transfer qubits and generate entanglement across a two-node network. Crucially, both of these operations can be made less sensitive to loss in the bus by encoding information with multiple photons and detecting loss errors. We transfer a bosonic qubit, tracking loss events to preserve the quantum information, achieving an error rate as low as that in a single-photon encoding. Further, we generate entanglement with two-photon interference and postselect against errors with local parity measurements, producing a Bell state with a high success probability and half the error of single photon case. These results provide several approaches for high-fidelity gates in a quantum network.

*This work is supported by U.S. Army Research Office (ARO) grant number W911NF-18-1-0212 and ARO MURI grant number W911NF-16-10349.

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Presenters

  • Luke Burkhart

    • Yale University

Authors

  • Luke Burkhart

    • Yale University

  • James Teoh

    • Yale University

  • Yaxing Zhang

    • Yale University

  • Christopher Axline

    • Yale University
    • ETH Zurich

  • Luigi Frunzio

    • Yale University
    • Department of Applied Physics, Yale University
    • Departments of Applied Physics and Physics, Yale University

  • Michel H. Devoret

    • Yale University
    • Department of Applied Physics, Yale University
    • Applied Physics, Yale University

  • Liang Jiang

    • University of Chicago
    • Pritzker School for Molecular Engineering, University of Chicago
    • Pritzker School of Molecular Engineering, University of Chicago
    • Yale University

  • Steven Girvin

    • Yale University
    • Department of Physics and Applied Physics, Yale University
    • Department of Physics, Yale University
    • Yale Quantum Institute, Yale University

  • Robert Schoelkopf

    • Yale University
    • Department of Applied Physics, Yale University
    • Departments of Applied Physics and Physics, Yale University