Noise Characterization of a Floquet-Mode Josephson Traveling-Wave Parametric Amplifier

ORAL

Abstract

Floquet-mode Josephson traveling-wave parametric amplifiers (Floquet TWPAs) are recently proposed to suppress higher-order sideband noise dominant in conventional uniform TWPAs and achieve broadband near-ideal quantum efficiency. Here we report the noise characterization result of a low-loss, qubit-fabrication-compatible Floquet TWPA device using both the circuit-QED and the waveguide-QED (wQED) power calibration methods. We directly compare the optimized system signal-to-noise improvement of our Floquet TWPA and a conventional homogeneous TWPA in the same experimental setup.



*This work was funded in part by the AWS Center for Quantum Computing. This material is based upon work supported under Air Force Contract No. FA8702-15-D-0001. Any opinions, findings, conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the U.S. Air Force.

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Presenters

  • Gregory Cunningham

    Massachusetts Institute of Technology MI, Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology, Harvard University, Massachusetts Institute of Technology (MIT)

Authors

  • Gregory Cunningham

    Massachusetts Institute of Technology MI, Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology, Harvard University, Massachusetts Institute of Technology (MIT)

  • Jennifer Wang

    Massachusetts Institute of Technology MIT

  • Jeffrey Knecht

    MIT Lincoln Lab, MIT Lincoln Laboratory

  • Alec Yen

    Massachusetts Institute of Technology MIT

  • Gregory D Cunningham

    Massachusetts Institute of Technology

  • Yufeng Ye

    Massachusetts Institute of Technology (MIT), Massachusetts Institute of Technology MI

  • Katrina M Sliwa

    MIT Lincoln Lab, MIT Lincoln Laboratory

  • Bethany M Niedzielski

    MIT Lincoln Lab, MIT Lincoln Laboratory

  • Yanjie Qiu

    Massachusetts Institute of Technology MIT

  • Mahdi Naghiloo

    Massachusetts Institute of Technology MI

  • Max Tan

    Massachusetts Institute of Technology

  • Alicia J Zang

    Massachusetts Institute of Technology, Massachusetts Institute of Technology (MIT)

  • Kyle Serniak

    MIT Lincoln Laboratory & MIT RLE, MIT Lincoln Laboratory, MIT Lincoln Laboratory, MIT RLE

  • Mollie E Schwartz

    MIT Lincoln Laboratory

  • William D Oliver

    Massachusetts Institute of Technology MI, Massachusetts Institute of Technology, Massachusetts Institute of Technology (MIT), Massachusetts Institute of Technology MIT

  • Kevin P O'Brien

    Massachusetts Institute of Technology MI, Massachusetts Institute of Technology MIT