100th RQC Seminar

  • 講演者

    Dr. Maja Cassidy
    ( Uneversity of New South Wales )

  • 日程

    2023年12月14日(木) 11:00-12:00

  • 開催場所

    ハイブリッド(ZOOM・ 統合支援棟2F大会議室)

  • 講演タイトル

    On-chip microwave generation with the Josephson laser

  • お問合せ


Superconducting electronic devices have reemerged as contenders for both classical and quantum computing due to their fast operation speeds, low dissipation, and long coherence times. In this talk, I will discuss our recent work in Josephson photonics to generate microwave radiation on-chip. We use one of the fundamental aspects of superconductivity, the ac Josephson effect, to demonstrate a laser made from a Josephson junction strongly coupled to a multimode superconducting cavity. A dc voltage bias applied across the junction provides a source of microwave photons, and the circuit’s nonlinearity allows for efficient down-conversion of higher-order Josephson frequencies to the cavity’s fundamental mode. The simple fabrication and operation allows for easy integration with a range of quantum devices, allowing for efficient on-chip generation of coherent microwave photons at low temperatures. Future devices, including single microwave photon generators and detectors will also be discussed.

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