Multi-spin chain gadget with exponentially small gap controlled by a single spin

ORAL

Abstract

We propose an annealing protocol with a multi-spin chain gadget where the minimum spectral gap closes exponentially with system size and can be controlled by acting only on one spin. This gadget can be realized on a chain of capacitively-shunted flux qubits. By performing Landau-Zener-Stuckelberg interferometry, we can learn more about the noise in the system. By performing a Landau-Zener sweep with a locally adiabatic schedule, the adiabatic timescale is quadratically improved over a linear schedule. We discuss experimental results and implications for quantum annealers with advanced control capabilities.

*The research is based upon work supported by the Office of the Director of National Intelligence (ODNI), Intelligence Advanced Research Projects Activity (IARPA) and the Defense Advanced Research Projects Agency (DARPA), via the U.S. Army Research Office contract W911NF-17-C-0050. 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 the ODNI, IARPA, DARPA, or the U.S. Government. The U.S. Government is authorized to reproduce and distribute reprints for Governmental purposes notwithstanding any copyright annotation thereon.

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Presenters

  • Xi Dai

    • University of Waterloo

Authors

  • Xi Dai

    • University of Waterloo

  • Robbyn Trappen

    • University of Waterloo

  • Daniel M Tennant

    • University of Waterloo

  • Denis Melanson

    • University of Waterloo

  • Muhammet Ali Yurtalan

    • University of Waterloo

  • Rui Yang

    • University of Waterloo

  • Alexander Melville

    • MIT Lincoln Lab
    • MIT Lincoln Laboratory
    • Lincoln Laboratory, MIT
    • MIT - Lincoln Laboratory

  • Bethany Niedzielski

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

  • Rabindra Das

    • MIT Lincoln Lab
    • MIT Lincoln Laboratory
    • Lincoln Laboratory, MIT
    • MIT - Lincoln Laboratory

  • David K Kim

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

  • William Oliver

    • MIT Lincoln Laboratory
    • Research Laboratory of Electronics, Massachusetts Institute of Technology
    • Research Laboratory of Electronics, MIT Lincoln Laboratory, Department of Electrical Engineering and Computer Science
    • MIT Research Laboratory of Electronics, MIT Lincoln Laboratory, MIT Department of Electrical Engineering and Computer Science
    • Massachusetts Institute of Technology MIT
    • Massachusetts Institute of Technology
    • Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology
    • Research Laboratory of Electronics, Massachusetts Institute of Technology, MIT Lincoln Laboratory
    • MIT
    • MIT, MIT Lincoln Lab
    • MIT Lincoln Lab
    • MIT Lincoln Lab, Massachusetts Institute of Technology
    • Research Laboratory of Electronics, Department of Electrical Engineering and Computer Science, and Department of Physics, Massachusetts Institute of Technology. MIT Lincoln L
    • Department of Physics, Department of Electrical Engineering & Computer Science, Research Laboratory of Electronics, MIT Lincoln Laboratory, Massachusetts Institute of Technol
    • Lincoln Laboratory, Research Laboratory of Electronics, and Department of Electrical Engineering & Computer Science, MIT

  • Jonilyn Yoder

    • MIT Lincoln Laboratory
    • MIT Lincoln Lab
    • Research Laboratory of Electronics, Massachusetts Institute of Technology
    • Lincoln Laboratory, MIT
    • MIT - Lincoln Laboratory
    • Massachusetts Institute of Technology MIT

  • Steven Weber

    • MIT Lincoln Laboratory
    • MIT Lincoln Lab
    • Lincoln Laboratory, MIT
    • MIT - Lincoln Laboratory

  • Andrew James Kerman

    • MIT Lincoln Laboratory
    • MIT Lincoln Lab
    • Lincoln Laboratory, MIT
    • MIT - Lincoln Laboratory

  • Joseph Gibson

    • Northrop Grumman - Mission Systems
    • Northrop Grumman Corporation

  • Jeffrey Grover

    • Northrop Grumman - Mission Systems
    • Northrop Grumman Corporation

  • Steven M Disseler

    • Northrop Grumman - Mission Systems
    • Northrop Grumman Corporation

  • James I Basham

    • Northrop Grumman - Mission Systems
    • Northrop Grumman Corporation

  • Sergey Novikov

    • Northrop Grumman - Mission Systems
    • Northrop Grumman Corporation

  • Evgeny Mozgunov

    • Univ of Southern California
    • University of Southern California

  • Mostafa Khezri

    • Univ of Southern California
    • University of Southern California

  • Huo Chen

    • Univ of Southern California
    • University of Southern California

  • Daniel Lidar

    • Univ of Southern California
    • University of Southern California

  • Tameem Albash

    • Electrical and Computer Engineering, University of New Mexico
    • University of New Mexico

  • Adrian Lupascu

    • University of Waterloo