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Absence of heating in a uniform Fermi gas created by periodic driving by Shkedrov, Constantine; Menashes, Meny; Ness, Gal; Vainbaum, Anastasiya; Altman, Ehud; Sagi, Yoav is a scholarly article available to read on EtoBox.

What is Absence of heating in a uniform Fermi gas created by periodic driving about?

Ultracold atomic gas provides a useful tool to explore many-body physics. One of the recent additions to this experimental toolbox is the Floquet engineering, where periodic modulation of the Hamiltonian allows the creation of effective potentials that do not exist otherwise. When subject to external modulations, however, generic interacting many-body systems absorb energy, thus posing a heating problem that may impair the usefulness of this method. For discrete systems with bounded local energy, an exponentially suppressed heating rate with the driving frequency has been observed previously, leaving the system in a prethermal state for exceedingly long durations. But for systems in continuous space, the situation remains unclear. Here we show that Floquet engineering can be employed to a strongly interacting degenerate Fermi gas held in a flat box-like potential without inducing excessive heating on experimentally relevant timescales. The driving eliminates the effect of a spin-dependent potential originating from a simultaneous magnetic levitation of two different spin states. We calculate the heating rate and obtain a power-law suppression with the drive frequency. To further te

Author

Shkedrov, Constantine; Menashes, Meny; Ness, Gal; Vainbaum, Anastasiya; Altman, Ehud; Sagi, Yoav

Published

2021

Language

EN