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Out-of-equilibrium quantum magnetism and thermalization in a spin-3 many-body dipolar lattice system

Author

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  • S. Lepoutre

    (Université Paris 13, Sorbonne Paris Cité, Laboratoire de Physique des Lasers
    UMR 7538, LPL)

  • J. Schachenmayer

    (Université de Strasbourg)

  • L. Gabardos

    (Université Paris 13, Sorbonne Paris Cité, Laboratoire de Physique des Lasers
    UMR 7538, LPL)

  • B. Zhu

    (University of Colorado
    University of Colorado
    ITAMP, Harvard-Smithsonian Center for Astrophysics)

  • B. Naylor

    (Université Paris 13, Sorbonne Paris Cité, Laboratoire de Physique des Lasers
    UMR 7538, LPL)

  • E. Maréchal

    (Université Paris 13, Sorbonne Paris Cité, Laboratoire de Physique des Lasers
    UMR 7538, LPL)

  • O. Gorceix

    (Université Paris 13, Sorbonne Paris Cité, Laboratoire de Physique des Lasers
    UMR 7538, LPL)

  • A. M. Rey

    (University of Colorado
    University of Colorado)

  • L. Vernac

    (Université Paris 13, Sorbonne Paris Cité, Laboratoire de Physique des Lasers
    UMR 7538, LPL)

  • B. Laburthe-Tolra

    (Université Paris 13, Sorbonne Paris Cité, Laboratoire de Physique des Lasers
    UMR 7538, LPL)

Abstract

Understanding quantum thermalization through entanglement build up in isolated quantum systems addresses fundamental questions on how unitary dynamics connects to statistical physics. Spin systems made of long-range interacting atoms offer an ideal experimental platform to investigate this question. Here, we study the spin dynamics and approach towards local thermal equilibrium of a macroscopic ensemble of S = 3 chromium atoms pinned in a three dimensional optical lattice and prepared in a pure coherent spin state, under the effect of magnetic dipole–dipole interactions. Our isolated system thermalizes under its own dynamics, reaching a steady state consistent with a thermal ensemble with a temperature dictated from the system’s energy. The build up of quantum correlations during the dynamics is supported by comparison with an improved numerical quantum phase-space method. Our observations are consistent with a scenario of quantum thermalization linked to the growth of entanglement entropy.

Suggested Citation

  • S. Lepoutre & J. Schachenmayer & L. Gabardos & B. Zhu & B. Naylor & E. Maréchal & O. Gorceix & A. M. Rey & L. Vernac & B. Laburthe-Tolra, 2019. "Out-of-equilibrium quantum magnetism and thermalization in a spin-3 many-body dipolar lattice system," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-09699-5
    DOI: 10.1038/s41467-019-09699-5
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    Cited by:

    1. Guido Masella & Nikolay V. Prokof’ev & Guido Pupillo, 2022. "Anti-drude metal of bosons," Nature Communications, Nature, vol. 13(1), pages 1-7, December.

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