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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.

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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