Improving microwave single photon detection efficiency with shaped photon capture

ORAL

Abstract

Traveling single microwave photons are an invaluable resoure as carriers of quantum information between remote systems but efficiently detecting these single microwave photons can be challenging. One demonstrated microwave photo-detector is based on a 3D qubit-cavity system where single photons are detected by applying a number-selective pi-pulse on the qubit, exciting it only when a single photon is present inside the cavity. The efficiency of this detector is ultimately limited to about 50\% because the cavity is not mode-matched to perfectly absorb the photon. We present one approach to increasing the detection efficiency that relies on driving a two-photon transition to capture the incident photon. We will discuss simulations and experimental results in a part of a system that robustly generates entanglement between distant superconducting qubits.

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Authors

  • A. Narla

    Department of Applied Physics, Yale University

  • S. Shankar

    Department of Applied Physics, Yale University, Yale University

  • S.O. Mundhada

    Department of Applied Physics, Yale University

  • J. Venkatraman

    Department of Applied Physics, Yale University

  • W. Pfaff

    Yale University, Department of Applied Physics, Yale University

  • L. Burkhart

    Department of Applied Physics, Yale University, Yale University

  • C. Axline

    Yale University, Department of Applied Physics, Yale University

  • L. Frunzio

    Department of Applied Physics, Yale University, New Haven, USA, Department of Applied Physics, Yale University, Yale University

  • R.J. Schoelkopf

    Yale University, Department of Applied Physics, Yale University

  • M.H. Devoret

    Yale University, Department of Applied Physics, Yale University, New Haven, USA, Department of Applied Physics, Yale University