One-Dimensional Bose Gases Out of Equilibrium

ORAL

Abstract

We will give an overview of our recent experiments on the quench dynamics and thermalization of isolated quantum systems. In a first experiment we coherently split a one-dimensional Bose gas. The time evolution following this quench leads to the establishment of a quasi-steady prethermalized state which we characterize in detail. Using time-resolved measurements of two-point correlation functions we further show that the strong correlations introduced by the quench decay according to a light-cone-like evolution. In a second series of experiments, we introduce a tunable tunnel coupling between the two gases. This allows us to explore a wide range of quench protocols with time-dependent tunnel couplings.

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Authors

  • Tim Langen

    • Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien

  • Maximilian Kuhnert

    • Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien

  • Michael Gring

    • Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien

  • Bernhard Rauer

    • Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien

  • David Adu Smith

    • Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien

  • Remi Geiger

    • Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien

  • Igor Mazets

    • Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien

  • Takuya Kitagawa

    • Harvard-MIT Center for Ultracold Atoms, Department of Physics, Harvard University

  • Eugene Demler

    • Harvard-MIT Center for Ultracold Atoms, Department of Physics, Harvard University

  • J\"org Schmiedmayer

    • Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien