Using a Shot Noise Junction to Characterize a Josepheson Travelling Wave Parametric Amplifier

ORAL

Abstract

The Josepheson Travelling Wave Parametric Amplifier (JTWPA) is a solution for a broad band amplifier with near quantum limited noise characteristics. Reported techniques using AC Stark shifts to characterize the noise of a JTWPA show excellent noise characteristics but are inherently narrow band. Using a shot noise tunnel junction (SNTJ) allows for broadband characterization of the noise temperature of the JTWPA. Techniques for optimizing the TWPA for different measurement uses will also be discussed.

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Presenters

  • Jacob Epstein

    Applied Physics Laboratory, Johns Hopkins University Applied Physics Laboratory, The Johns Hopkins University Applied Physics Laboratory

Authors

  • Jacob Epstein

    Applied Physics Laboratory, Johns Hopkins University Applied Physics Laboratory, The Johns Hopkins University Applied Physics Laboratory

  • Kyle McElroy

    Johns Hopkins University Applied Physics Laboratory, The Johns Hopkins University Applied Physics Laboratory

  • Lafe Spietz

    Spietz Applied Sciences, LLC

  • Timothy M Sweeney

    Johns Hopkins University Applied Physics Laboratory

  • Jose Aumentado

    NIST Boulder, Boulder, National Institute of Standards and Technology

  • Joan A Hoffmann

    Johns Hopkins University Applied Physics Laboratory, The Johns Hopkins University Applied Physics Laboratory