Preparation of a narrowband, itinerant microwave qubit for quantum information transfer

ORAL

Abstract

Narrowband microwave-frequency signals are compatible with many quantum information processing technologies and can coherently transfer quantum information between devices. The creation of itinerant, microwave single photon states has been successfully demonstrated. Here, we show progress towards generating a narrowband, itinerant microwave qubit in a coherent superposition of zero and one Fock states. Specifically, we use the red-sideband transition of a transmon to map a superposition of qubit states onto a propagating microwave signal. This signal should have a bandwidth sufficiently narrow to be absorbed by a quantum-enabled electro-optic converter [1], potentially enabling the transfer of quantum information from a transmon qubit to the optical domain.

*[1] R.W. Andrews, \textit{et al}., Nature Phys. \textbf{10}, 321--326 (2014).

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Authors

  • Xizheng Ma

    • Department of Physics, University of Colorado, Boulder, Colorado, USA

  • Adam Reed

    • Department of Physics, University of Colorado, Boulder, Colorado, USA

  • Lucas Sletten

    • JILA, University of Colorado, Boulder, Colorado
    • Department of Physics, University of Colorado, Boulder, Colorado, USA

  • M. Reagor

    • Department of Physics and Applied Physics, Yale University, New Haven, Connecticut
    • Departments of Applied Physics and Physics, Yale University, New Haven, Connecticut, USA.
    • Yale University

  • Luke Burkhart

    • Department of Applied Physics, Yale University
    • Departments of Applied Physics and Physics, Yale University, New Haven, Connecticut, USA.

  • Wolfgang Pfaff

    • Yale University
    • Department of Physics and Applied Physics, Yale University, New Haven, Connecticut
    • Departments of Applied Physics and Physics, Yale University, New Haven, Connecticut, USA.

  • R. J. Schoekopf

    • Yale University
    • Department of Applied Physics, Yale University
    • Department of Applied Physics and Physics, Yale University
    • Department of Physics and Applied Physics, Yale University, New Haven, Connecticut
    • Departments of Applied Physics and Physics, Yale University, New Haven, Connecticut, USA.
    • Yale University, Department of Applied Physics
    • Yale University Department of Applied Physics

  • Konrad Lehnert

    • JILA, University of Colorado, Boulder, National Institute of Standards and Technology, Boulder
    • JILA and National Institute of Standards and Technology, Boulder, Colorado
    • JILA, University of Colorado and NIST, Boulder, Colorado, USA; Department of Physics, University of Colorado, Boulder, Colorado, USA
    • JILA, University of Colorado, NIST-Boulder