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

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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