Characterization of Josephson phase-slip qubits, part 1: device fundamentals

ORAL

Abstract

The Josephson phase-slip qubit (JPSQ) [1] is a superconducting circuit that emulates a vector quantum S=1/2 system, with an effective dipole moment nearly independent of applied field, even near zero. This makes JPSQs ideal for emulating vector spin interactions, such as non-Stoquastic +XX of interest for quantum annealing. We describe the design and operation of a JPSQ implementation. Using dispersive readout, we demonstrate the predicted periodic tuning with both flux and charge, and measure lifetimes in the microsecond regime. We also characterize the influence of charge jumps on the circuit’s operation. These results confirm the operating principles of the JPSQ and suggest that it could play an important role in a variety of quantum device architectures.

[1] A. J. Kerman, arXiv:1810.01352

*This research is funded by the Office of the Director of National Intelligence (ODNI), Intelligence Advanced Research Projects Activity (IARPA), and by the Assistant Secretary of Defense for Research & Engineering under Air Force Contract No. FA8721-05-C-0002. The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsements, either expressed or implied, of ODNI, IARPA, or the U.S. Government.

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Presenters

  • Cyrus F. Hirjibehedin

    • MIT Lincoln Laboratory
    • London Centre for Nanotechnology, University College London

Authors

  • Cyrus F. Hirjibehedin

    • MIT Lincoln Laboratory
    • London Centre for Nanotechnology, University College London

  • Steven J. Weber

    • MIT Lincoln Laboratory

  • Gabriel O. Samach

    • Lincoln Lab, Massachusetts Institute of Technology, USA
    • MIT Lincoln Laboratory
    • Department of Electrical Engineering and Computer Science, MIT; MIT Lincoln Laboratory

  • David K Kim

    • MIT Lincoln Lab
    • Lincoln Laboratory, Massachusetts Institute of Technology
    • MIT Lincoln Laboratory
    • Massachusetts Institute of Technology
    • Massachusetts Institute of Technology Lincoln Laboratory
    • Lincoln Lab, Massachusetts Institute of Technology, USA
    • MIT Lincoln Laboratory, Massachusetts Institute of Technology

  • Alexander Melville

    • MIT Lincoln Lab
    • MIT Lincoln Laboratory
    • Massachusetts Institute of Technology
    • Lincoln Laboratory, Massachusetts Institute of Technology
    • MIT Lincoln Laboratory, 244 Wood Street, Lexington, MA 02421
    • MIT Lincoln Laboratory, Massachusetts Institute of Technology

  • Bethany M. Niedzielski

    • Massachusetts Institute of Technology
    • MIT Lincoln Laboratory
    • MIT Lincoln Laboratory, 244 Wood Street, Lexington, MA 02421

  • Danna Rosenberg

    • MIT Lincoln Laboratory
    • Massachusetts Institute of Technology

  • Jonilyn L Yoder

    • MIT Lincoln Lab
    • Lincoln Laboratory, Massachusetts Institute of Technology
    • MIT Lincoln Laboratory
    • Massachusetts Institute of Technology
    • Massachusetts Institute of Technology Lincoln Laboratory
    • Lincoln Lab, Massachusetts Institute of Technology, USA
    • MIT Lincoln Laboratory, 244 Wood Street, Lexington, MA 02421
    • MIT Lincoln Laboratory, Massachusetts Institute of Technology

  • William D Oliver

    • Research Laboratory of Electronics, Massachusetts Institute of Technology
    • Department of Physics, Research Laboratory of Electronics, Lincoln Laboratory, Massachusetts Institute of Technology
    • MIT Lincoln Lab
    • MIT Lincoln Laboratory, Department of Physics, Massachusetts Institute of Technology
    • MIT Lincoln Laboratory
    • Massachusetts Institute of Technology
    • Research Laboratory of Electronics, Physics, Lincoln Laboratory, Massachusetts Institute of Technology
    • Department of Physics, Massachusetts Institute of Technology
    • Research Laboratory of Electronics, Massachusetts Institute of Technology, MIT Lincoln Laboratory, Physics, Massachusetts Institute of Technology
    • Dept. of Physics, Research Laboratory of Electronics, and Lincoln Lab, Massachusetts Institute of Technology, USA
    • Research Laboratory of Electronics, Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, MIT Lincoln Laboratory, 244 Wood Street, Lexington, MA
    • Massachusetts Institute of Technology and MIT Lincoln Laboratory
    • Research Laboratory of Electronics, MIT Lincoln Laboratory, Department of Physics, Massachusetts Institute of Technology
    • Department of Physics, Research Laboratory of Electronics, MIT Lincoln Laboratory, Massachusetts Institute of Technology
    • Department of Physics, MIT; Research Laboratory of Electronics, MIT; MIT Lincoln Laboratory

  • Andrew James Kerman

    • MIT Lincoln Laboratory
    • Massachusetts Institute of Technology