Quantum Simulation of the Fermi-Hubbard Model

POSTER

Abstract

Developments in quantum gas microscopy have enabled detailed studies of the repulsive Fermi-Hubbard model. Using fermionic Lithium-6 in a square lattice, we observe the transition into an antiferromagnet at temperatures below the superexchange energy. We use a novel pattern-finding algorithm to characterize the system’s behavior upon hole-doping. This new observable provides evidence that holes may be hiding the antiferromagnetic order rather than destroying it. We then investigate the deterministic injection of a single mobile dopant into an antiferromagnet and observe how it propagates. Finally, we discuss our progress towards an optical lattice with dynamically tunable interference contrast, which enables several low-entropy state preparation schemes and spin-resolved readout.

Presenters

  • Geoffrey Ji

    • Harvard University
    • Physics Department, Harvard University

Authors

  • Geoffrey Ji

    • Harvard University
    • Physics Department, Harvard University

  • Christie S Chiu

    • Harvard University

  • Annabelle Bohrdt

    • Physics Department, Technical University of Munich
    • Harvard University and Technical University of Munich
    • Harvard University and Technical Unversity of Munich
    • Physics, TU Munich
    • Technical University of Munich

  • Muqing Xu

    • Harvard University
    • Physics Department, Harvard University

  • Justus Brüggenjürgen

    • Harvard University and University of Hamburg
    • University of Hamburg and Harvard University

  • Michael Knap

    • Physics Department, Technical University of Munich
    • Technical University of Munich
    • Department of Physics, Technical University of Munich

  • Eugene Demler

    • Physics Department, Harvard University
    • Harvard University

  • Fabian Grusdt

    • Physics Department, Technical University of Munich
    • Department of Physics and Institute for Advanced Study, Technical University of Munich, 85748 Garching
    • Harvard University
    • Technical University of Munich

  • Markus Greiner

    • Harvard University
    • Physics Department, Harvard University

  • Daniel Greif

    • Harvard University
    • Physics Department, Harvard University