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.

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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