Efficiency of a microwave photon detector based on a current-biased Josephson junction

ORAL

Abstract

In this talk we discuss the efficiency of a microwave photon detector based on a current-biased Josephson junction driven by a classical microwave source. We consider the evolution of the junction in the presence of the environment and tunneling events to the voltage state. We calculate the switching time distribution to the voltage state and evaluate the efficiency of the photon detector as a function of input power and the junction parameters. We present conditions for the optimal power matching between the detector and the microwave source.

*This work is supported by the ARO under grant W911NF-11-1-0030 and the NSF under grant DMR-1105178.

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Authors

  • Amrit Poudel

    • Department of Physics, University of Wisconsin-Madison

  • Canran Xu

    • University of Wisconsin
    • Department of Physics, University of Wisconsin-Madison

  • Maxim G. Vavilov

    • University of Wisconsin - Madison, Madison, WI, USA
    • Department of Physics, University of Wisconsin-Madison
    • University of Wisconsin-Madison, Madison, WI 53706