Coupling annealing-capable high-coherence flux qubits

ORAL

Abstract

Despite progress in quantum annealing algorithms and hardware development, key questions remain regarding the role of quantum coherence, entanglement, etc., on key figures of merit needed for real world applications. In this talk we will discuss results of small scale annealing experiments with high-coherence superconducting flux qubits as a part of the Quantum Enhanced Optimization program, which seeks to understand and address these issues. Using systems of two and three fully-connected qubits, we demonstrate controllable, scalable couplings between the Z-like fields of individual qubits. We will discuss the impact of coupling on the coherence of the system as it relates to both multi-qubit measurement fidelity as well as the potential importance as a source of error during computation.

*This material is based upon work supported by the Intelligence Advanced Research Projects Activity (IARPA) through the Army Research Office (ARO) Contract No. W911NF-17-C-0050. Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the Intelligence Advanced Research Projects Activity (IARPA) and the Army Research Office (ARO).

–

Presenters

  • Steven Disseler

    • National Institute of Standards and Technology
    • Northrop Grumman - Mission Systems
    • Northrop Grumman

Authors

  • Steven Disseler

    • National Institute of Standards and Technology
    • Northrop Grumman - Mission Systems
    • Northrop Grumman

  • James I. Basham

    • Northrop Grumman - Mission Systems
    • Northrop Grumman

  • Jeffrey Grover

    • Northrop Grumman - Mission Systems
    • Northrop Grumman

  • Sergey Novikov

    • Northrop Grumman
    • Northrop Grumman - Mission Systems
    • Northrop Grumman Corporation - Mission Systems

  • David Ferguson

    • Northrop Grumman
    • Northrop Grumman - Mission Systems
    • Northrop Grumman Corporation

  • Zachary A Stegen

    • Northrop Grumman - Mission Systems
    • Northrop Grumman

  • Alexander Marakov

    • Northrop Grumman - Mission Systems
    • Northrop Grumman

  • 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

    • Michigan State University
    • MIT Lincoln Laboratory
    • Lincoln Laboratory, Massachusetts Institute of Technology
    • MIT Lincoln Lab
    • Department of Physics, Massachusetts Institute of Technology
    • 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

  • Robert Hinkey

    • Northrop Grumman
    • Northrop Grumman - Mission Systems

  • Daniel A Lidar

    • University of Southern California
    • Univ of Southern California

  • Kenneth M. Zick

    • Northrop Grumman
    • Northrop Grumman - Mission Systems