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.

*The authors would like to acknowledge MIT Lincoln Laboratory for providing the JTWPA for this work.

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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