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Driven and self-driven quantum many-body systems

Friday June 19, 2020
1:00 pm

 Presenter:  Tilman Esslinger, ETH
 Series:  CQuIC Seminars
 Abstract:  A VIRTUAL AMO SEMINAR presented in a Zoom meeting vetted by CQuIC. See https://sites.google.com/stanford.edu/virtual-amo-seminar/schedule for the meeting link. Applying a periodic drive to a quantum many-body system offers many prospects and a challenge. Whilst a wide range of non-trivial Hamiltonians can be engineered, Floquet-heating often spoils the party. I will first report on a scheme realizing the fundamental ingredient for a density-dependent gauge field by engineering non-trivial Peierls phases that depend on the site occupation of fermions in a Hubbard model [1]. I will further discuss experiments in which we demonstrated how to circumvent Floquet-heating by two-path quantum interference, effectively suppressing dissipative coupling to higher bands [2]. On a different note, an experiment will be discussed in which a dissipative coupling leads to a self-oscillating evolution between a spin wave and a density wave [3].
 Host:  Ivan Deutsch
 Location:  Zoom

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