Probing entanglement in a many-body–localized system

DOI Web Site 11 Citations
  • Alexander Lukin
    Department of Physics, Harvard University, Cambridge, MA 02138, USA.
  • Matthew Rispoli
    Department of Physics, Harvard University, Cambridge, MA 02138, USA.
  • Robert Schittko
    Department of Physics, Harvard University, Cambridge, MA 02138, USA.
  • M. Eric Tai
    Department of Physics, Harvard University, Cambridge, MA 02138, USA.
  • Adam M. Kaufman
    Department of Physics, Harvard University, Cambridge, MA 02138, USA.
  • Soonwon Choi
    Department of Physics, Harvard University, Cambridge, MA 02138, USA.
  • Vedika Khemani
    Department of Physics, Harvard University, Cambridge, MA 02138, USA.
  • Julian Léonard
    Department of Physics, Harvard University, Cambridge, MA 02138, USA.
  • Markus Greiner
    Department of Physics, Harvard University, Cambridge, MA 02138, USA.

Abstract

<jats:title>A logarithmic signature</jats:title> <jats:p> Some one-dimensional disordered interacting quantum systems have been theoretically predicted to display a property termed many-body localization (MBL), where the system retains the memory of its initial state and fails to thermalize. However, proving experimentally that something does not occur is tricky. Instead, physicists have proposed monitoring the entanglement entropy of the system, which should grow logarithmically with evolution time in an MBL system. Lukin <jats:italic>et al.</jats:italic> observed this characteristic logarithmic trend in a disordered chain of interacting atoms of rubidium-87. This method should be generalizable to other experimental platforms and higher dimensions. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="https://www.sciencemag.org/content/354/6300/256.full">256</jats:ext-link> </jats:p>

Journal

  • Science

    Science 364 (6437), 256-260, 2019-04-19

    American Association for the Advancement of Science (AAAS)

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