Decay and revival of a transient trapped Fermi condensate

Harrison, Timothy and Link, Martin and Behrle, Alexandra and Gao, Kuiyi and Kell, Andreas and Kombe, Johannes and Bernier, Jean-Sébastien and Kollath, Corinna and Köhl, Michael (2021) Decay and revival of a transient trapped Fermi condensate. Physical Review Research, 3 (2). 023205. ISSN 2643-1564

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    Abstract

    We study experimentally and theoretically the response of a two-component Fermi condensate in the strongly interacting regime to a quench of the interaction strength. The quench is realized using a radiofrequency π-pulse to a third internal level with a different interaction strength. We find that the quench excites the monopole mode of the trap in the hydrodynamic regime, and that an initial change of the condensate properties takes place on a timescale comparable or even larger than the quasiparticle relaxation time.