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Fabrication and characterization of Josephson parametric amplifiers based on micron-scale Josephson junctions

ORAL

Abstract

Josephson parametric amplifiers (JPAs) with quantum limited noise performance have become essential components in superconducting quantum circuits. We describe a fabrication process to yield micrometer-scale Josephson junctions [1].  The room temperature characterization of junctions will be presented as a function of oxidation dose and junction geometry. Low temperature current-voltage characteristics indicate that our fabrication process yields high quality junctions. Next, we design and fabricate JPAs. Our fabrication process yields low loss frequency tunable JPAs with typical gain of ~30 dB. The noise characterization of our JPAs reveal near quantum limited noise performance. This material  is based upon work supported by the U.S. Department of Energy, Office of Science, National Quantum  Information Science Research Centers, Superconducting Quantum Materials and Systems Center (SQMS) under contract number DE-AC02-07CH11359.

[1] M. Bal et al.,  “Overlap junctions for superconducting quantum electronics and amplifiers”, Appl. Phys. Lett. 118, 112601 (2021)

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Publication: M. Bal et al., "Overlap junctions for superconducting quantum electronics and amplifiers", Appl. Phys. Lett. 118, 112601 (2021)

Presenters

  • Mustafa Bal

    National Institute of Standards and Technology Boulder, Fermilab, Superconducting Quantum Materials and Systems Center (SQMS), Fermilab

Authors

  • Mustafa Bal

    National Institute of Standards and Technology Boulder, Fermilab, Superconducting Quantum Materials and Systems Center (SQMS), Fermilab

  • Junling Long

    University of Colorado, Boulder

  • RUICHEN ZHAO

    National Institute of Standards and Technology Boulder

  • Haozhi Wang

    University of Colorado, Boulder, University of Maryland, College Park, Laboratory for Physical Sciences, College Park, MD 20740, USA

  • Sungoh Park

    University of Colorado, Boulder

  • Corey Rae McRae

    National Institute of Standards and Technology

  • Tongyu Zhao

    National Institute of Standards and Technology Boulder

  • Russell E Lake

    Bluefors, Bluefors Cryogenic, Bluefors Oy

  • Volodymyr Monarkha

    Bluefors, Bluefors Cryogenic

  • Slawomir Simbierowicz

    Bluefors, Bluefors Cryogenic

  • Daniil Frolov

    Fermilab, Superconducting Quantum Materials and Systems Center (SQMS), Fermilab, Superconducting Quantum Materials and Systems, Fermi National Accelerator Laboratory

  • Roman Pilipenko

    Fermilab, Superconducting Quantum Materials and Systems Center (SQMS), Fermilab, FNAL, Superconducting Quantum Materials and Systems, Fermi National Accelerator Laboratory

  • Silvia Zorzetti

    Fermilab

  • Alexander Romanenko

    Fermilab, Superconducting Quantum Materials and Systems Center (SQMS), Fermilab

  • Chuan-Hong Liu

    University of Wisconsin Madison, University of Wisconsin- Madison, University of Wisconsin - Madison, University of Wisconsin-Madison

  • Robert McDermott

    University of Wisconsin - Madison

  • David Pappas

    National Institute of Standards and Technology Boulder, Rigetti Computing