Quantum Quench Dynamics of a Fermi Impurity

ORAL

Abstract

We investigate the dynamics of a $^{40}$K impurity in a $^{6}$Li Fermi sea after a quench into the strongly interacting regime. Using atom interferometry, we observe the formation dynamics of both the attractive and the repulsive polarons. For resonant $^{40}$K-$^{6}$Li interactions, we observe quantum beats due to a simultaneous excitation of the upper and lower branches of the interacting many-body system.

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Authors

  • Marko Cetina

    Institute for Experimental Physics, Innsbruck University and Institute for Quantum Optics and Quantum Information, Innsbruck

  • Michael Jag

    Institute for Experimental Physics, Innsbruck University and Institute for Quantum Optics and Quantum Information, Innsbruck

  • Rianne Lous

    Institute for Experimental Physics, Innsbruck University and Institute for Quantum Optics and Quantum Information, Innsbruck

  • Isabella Fritsche

    Institute for Experimental Physics, Innsbruck University and Institute for Quantum Optics and Quantum Information, Innsbruck

  • Georg Bruun

    Department of Physics and Astronomy, University of Aarhus

  • Rasmus Christensen

    Department of Physics and Astronomy, University of Aarhus

  • Meera Parish

    School of Physics and Astronomy, Monash University

  • Jesper Levinsen

    School of Physics and Astronomy, Monash University

  • Rudolf Grimm

    Institute for Experimental Physics, Innsbruck University and Institute for Quantum Optics and Quantum Information, Innsbruck