Emergent Randomness from Many-Body Quantum Chaos

ORAL

Abstract

In this talk we introduce a new method for generating random quantum state ensembles in an experimentally practical manner, and observe signatures of these ensembles using a Rydberg quantum simulator. Concretely, we find that universal and highly random state ensembles are encoded in a wavefunction resulting from chaotic quantum many-body dynamics; these ensembles can be uncovered when the correlations between complementary subsystems are properly captured. Our results offer both a new approach for studying many-body chaos and quantum thermalization, and an easily-implementable method for sampling quantum states randomly over the Hilbert space; the latter enables quantum platforms with limited spatiotemporal control to realize a variety of previously inaccessible applications, such as device benchmarking.

*This work was supported by the Institute for Quantum Information and Matter, an NSF Physics Frontiers Center (NSF Grant PHY-1733907), the NSF CAREER award (1753386), the AFOSR YIP (FA9550-19-1-0044), the DARPA ONISQ program (W911NF2010021), the Army Research Office MURI program (W911NF2010136), the NSF QLCI program (2016245), and the DOE (DE-SC0012567).

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Publication: https://arxiv.org/abs/2103.03535; https://arxiv.org/abs/2103.03536

Presenters

  • Adam L Shaw

    • Caltech

Authors

  • Adam L Shaw

    • Caltech

  • Joonhee Choi

    • Caltech

  • Ivaylo S Madjarov

    • Caltech

  • Xin Xie

    • Caltech
    • University of Colorado, Boulder

  • Jacob P Covey

    • Caltech

  • Jordan Cotler

    • Harvard
    • Harvard University

  • Daniel Mark

    • MIT

  • Hsin-Yuan Huang

    • Caltech

  • Anant Kale

    • Caltech
    • Harvard University

  • Hannes Pichler

    • Caltech
    • University of Innsbruck

  • Fernando Brandao

    • Caltech

  • Soonwon Choi

    • University of California, Berkeley

  • Manuel Endres

    • Caltech