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arXiv · 2208.13127

Observation of stochastic resonance in directed propagation of cold atoms

Alexander Staron·Kefeng Jiang·Casey Scoggins·Daniel Wingert·David Cubero·Samir Bali
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Abstract

Randomly diffusing atoms confined in a dissipative optical lattice are illuminated by a weak probe of light. The probe transmission spectrum reveals directed atomic propagation that occurs perpendicular to the direction of probe beam propagation. Resonant enhancement of this directed propagation is observed as we vary the random photon scattering rate. We experimentally characterize this stochastic resonance as a function of probe intensity and lattice well depth. A simple model reveals how the probe-excited atomic density waves and optical pumping rates conspire to create directed atomic propagation within a randomly diffusing sample.

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Alexander Staron, Kefeng Jiang, Casey Scoggins, Daniel Wingert, David Cubero, Samir Bali. 2022-08-28. Observation of stochastic resonance in directed propagation of cold atoms. https://doi.org/10.1103/physrevresearch.4.043211

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