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Overlap junction-based Josephson parametric amplifiers (O-JPA)

ORAL

Abstract

We have recently developed submicron scale overlap Josephson junction fabrication process suitable for superconducting qubits with long coherence times [1]. Here, we extend the fab process to micron scale overlap junctions to enable other superconducting quantum devices such as overlap junction-based Josephson parametric amplifiers (O-JPA). We realize frequency tunable O-JPAs with negligible insertion loss. Compared to other competing processes, overlap junction process for micron scale junctions allows the fabrication of O-JPAs with high yield and good device performance at a much lower infrastructure requirements. We present the fabrication details as well as the characterization of O-JPAs.

[1] X. Wu, J. L. Long, H. S. Ku, R. E. Lake, M. Bal, and D. P. Pappas, “Overlap junctions for high coherence superconducting qubits”, Appl. Phys. Lett. 111, 032602 (2017).

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Presenters

  • Mustafa Bal

    National Institute of Standards and Technology Boulder, National Institute of Standards and Technology, National Institute of Standard and Technology Boulder, National Institute of Standards and Technology - Boulder

Authors

  • Mustafa Bal

    National Institute of Standards and Technology Boulder, National Institute of Standards and Technology, National Institute of Standard and Technology Boulder, National Institute of Standards and Technology - Boulder

  • Junling Long

    NIST Boulder / CU Boulder, National Institute of Standards and Technology Boulder, University of Colorado Boulder, Physics, CU Boulder, Physics, University of Colorado-Boulder

  • Ruichen Zhao

    NIST Boulder / CU Boulder, National Institute of Standards and Technology Boulder, National Institute of Standard and Technology Boulder, National Institute of Standards and Technology - Boulder

  • Haozhi Wang

    NIST Boulder / CU Boulder, National Institute of Standards and Technology Boulder, National Institute of Standard and Technology Boulder

  • Corey Rae McRae

    University of Colorado, Boulder, National Institute of Standards and Technology Boulder

  • Russell Lake

    National Institute of Standards and Technology Boulder, QCD Labs, QTF Center of Excellence, Department of Applied Physics, Aalto University, QCD Labs, QTF Centre of Excellence, Department of Applied Physics, Aalto University, Bluefors

  • Sungoh Park

    NIST Boulder / CU Boulder, National Institute of Standards and Technology Boulder, University of Colorado, Boulder, University of Colorado Boulder

  • Xian Wu

    National Institute of Standards and Technology Boulder, Lawrence Livermore Natl Lab

  • Hsiang-Sheng Ku

    Alibaba Quantum Laboratory, Alibaba Group, National Institute of Standards and Technology Boulder

  • Daniil Frolov

    Fermi National Accelerator Laboratory, Fermilab

  • Roman Pilipenko

    Fermi National Accelerator Laboratory, Fermilab

  • Silvia Zorzetti

    Fermi National Accelerator Laboratory, Fermilab

  • Eric T Holland

    Fermi National Accelerator Laboratory, Fermilab

  • Alexander Romanenko

    Fermi National Accelerator Laboratory, Fermilab

  • David Pappas

    NIST Boulder, National Institute of Standards and Technology Boulder, NIST, National Institute of Standards and Technology, National Institute of Standard and Technology Boulder, National Institute of Standards and Technology - Boulder