Lumped, Single-ended Josephson Parametric Converters for Hamiltonian Engineering

ORAL

Abstract

Quantum-limited parametric amplifiers have become a crucial tool for quantum information processing. However, they have limited bandwidth and saturation power and operate in reflection. We present a design and implementation of a lumped single ended design for the Josephson Parametric Converter (JPC) whose inductance is dominated by the central Josephson Ring Modulator (JRM). Implementation of the JPC as a lumped circuit was facilitated by fabrication in a Nb/Al-AlOx/Nb tri-layer process incorporating a low-loss amorphous silicon dielectric. This design allows us to more easily engineer the device’s Hamiltonian to control the amplitude of the JRM’s three wave mixing terms which provide gain, and control higher order terms to enhance the saturation power and simplify operation as a directional multi-parametric amplifier.

*Work supported by : ARO, NSF and the Kauffan fundation

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Presenters

  • Tzu-Chiao Chien

    • University of Pittsburgh
    • Department of Physics and Astronomy, University of Pittsburgh
    • Physics and Astronomy, University of Pittsburgh

Authors

  • Tzu-Chiao Chien

    • University of Pittsburgh
    • Department of Physics and Astronomy, University of Pittsburgh
    • Physics and Astronomy, University of Pittsburgh

  • Katarina Cicak

    • National Institute of Standards and Technology
    • NIST-Boulder
    • National Institute of Standards and Technology Boulder

  • Florent Lecocq

    • National Institute of Standards and Technology
    • NIST-Boulder
    • National Institute of Standards and Technology Boulder

  • Olivia Lanes

    • University of Pittsburgh

  • Xi Cao

    • University of Pittsburgh
    • Department of Physics and Astronomy, University of Pittsburgh
    • Physics and Astronomy, University of Pittsburgh

  • Chenxu Liu

    • University of Pittsburgh
    • Department of Physics and Astronomy, University of Pittsburgh

  • Gangqiang Liu

    • University of Pittsburgh
    • Department of Physics and Astronomy, University of Pittsburgh
    • Physics and Astronomy, University of Pittsburgh

  • David Pekker

    • University of Pittsburgh
    • Department of Physics and Astronomy, University of Pittsburgh
    • Physics and Astronomy, University of Pittsburgh

  • Jose Aumentado

    • National Institute of Standards and Technology
    • NIST-Boulder
    • National Institute of Standards and Technology Boulder
    • NIST - Boulder
    • NIST, Boulder CO.

  • Michael Hatridge

    • University of Pittsburgh
    • Department of Physics and Astronomy, University of Pittsburgh
    • Physics and Astronomy, University of Pittsburgh