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).

–

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