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  • Institute for Quantum Computing

    Generating Multimode Entangled Microwaves with a Superconducting Parametric Cavity

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    Abstract

     

    We demonstrate the generation of multimode entangled states of propagating microwaves. The entangled
    states are generated by our parametrically pumping a multimode superconducting cavity. By
    combining different pump frequencies, applied simultaneously to the device, we can produce different
    entanglement structures in a programable fashion. The Gaussian output states are fully characterized by
    our measuring the full covariance matrices of the modes. The covariance matrices are absolutely calibrated
    by our using an in situ microwave calibration source, a shot-noise tunnel junction. Applying a variety of
    entanglement measures, we demonstrate both full inseparability and genuine tripartite entanglement of the
    states. Our method is easily extensible to more modes.

    Author(s)

    C. W. Sandbo Chang M. Simoen José Aumentado Carlos Sabín P. Forn-Díaz A. M. Vadiraj Fernando Quijandría G. Johansson I. Fuentes C. M. Wilson

    Project

    Distributing Multimode Entanglement with Microwave Photons

    Date

    2018-10-08

    Publication

    Physical Review Applied

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