Violating Bell's Inequality with Remotely-Connected Superconducting Qubits

ORAL

Abstract

Quantum communication relies on the efficient generation of entanglement between remote quantum nodes, due to entanglement's key role in achieving and verifying secure communications. Remote entanglement has been realized using a number of different probabilistic schemes, but deterministic remote entanglement has only recently been demonstrated, using a variety of superconducting circuit approaches. However, the deterministic violation of a Bell inequality, a strong measure of quantum correlation, has not to date been demonstrated in a superconducting quantum communication architecture, in part because achieving sufficiently strong correlation requires fast and accurate control of the emission and capture of the entangling photons. Here we present a simple and robust architecture for achieving this benchmark result in a superconducting system.

*This effort is supported by the Army Research Office under contract W911NF-15-2-0058, the Air Force Office of Scientific Research, and the Department of Energy. This work was partially supported by the UChicago MRSEC (NSF DMR-1420709) and made use of the Pritzker Nanofabrication Facility, which receives support from SHyNE, a node of the National Science Foundation's National Nanotechnology Coordinated Infrastructure (NSF NNCI-1542205).

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Presenters

  • Youpeng Zhong

    • University of Chicago
    • Institute for Molecular Engineering, University of Chicago

Authors

  • Youpeng Zhong

    • University of Chicago
    • Institute for Molecular Engineering, University of Chicago

  • Hung-Shen Chang

    • University of Chicago
    • Institute for Molecular Engineering, University of Chicago

  • Kevin Satzinger

    • Physics, University of California, Santa Barbara
    • University of California, Santa Barbara
    • Department of Physics, University of California, Santa Barbara
    • Department of Physics, Univerity of California, Santa Barbara
    • UC Santa Barbara; University of Chicago
    • Google Inc - Santa Barbara

  • Ming-Han Chou

    • University of Chicago
    • Institute for Molecular Engineering, University of Chicago

  • Audrey Bienfait

    • Institute for Molecular Engineering, University of Chicago
    • University of Chicago

  • Christopher Conner

    • University of Chicago
    • Institute for Molecular Engineering, University of Chicago

  • Etienne Dumur

    • University of Chicago
    • Institute for Molecular Engineering, University of Chicago

  • Joel Grebel

    • University of Chicago
    • Institute for Molecular Engineering, University of Chicago

  • Gregory A Peairs

    • University of Chicago
    • Physics, University of California, Santa Barbara
    • University of California, Santa Barbara
    • Department of Physics, University of California, Santa Barbara
    • Department of Physics, Univerity of California, Santa Barbara
    • UC Santa Barbara; University of Chicago

  • Rhys G Povey

    • University of Chicago
    • Institute for Molecular Engineering, University of Chicago

  • David Schuster

    • University of Chicago
    • The University of Chicago
    • Physics, University of Chicago
    • Department of Physics, University of Chicago

  • Andrew N Cleland

    • University of Chicago
    • Institute for Molecular Engineering, University of Chicago