Dynamic vortex unbinding following a quantum quench in bosonic mixtures

ORAL

Abstract

We study the many-body dynamics of a mixture of two hyperfine states of bosonic atoms in 2D, following a pi/2-pulse. Using both a numerical implementation of the Truncated Wigner approximation and an analytical approach, we find that a dynamic phase transition can be triggered, in which the system relaxes from a superfluid to a disordered state via vortex unbinding. This process can be dynamically suppressed, which creates a long-lived metastable supercritical state. We discuss the realization and detection of these effects.

–

Authors

  • Ludwig Mathey

    • Joint Quantum Institute

  • Kenneth Guenter

    • Laboratoire Kastler Brossel, ENS

  • Jean Dalibard

    • Laboratoire Kastler Brossel, ENS

  • Anatoli Polkovnikov

    • Boston University

  • Charles Clark

    • Joint Quantum Institute
    • NIST
    • Joint Quantum Insititue, National Insitute of Standard and Technology
    • Joint Quantum Institute, National Institute of Standards and Technology and University of Maryland
    • JQI, NIST and the University of Maryland
    • National Institute of Standards and Technology
    • Joint Quantum Institute, NIST and the University of Maryland
    • Joint Quantum Institute, NIST and University of Maryland