Observation of stochastic resonance in directed propagation of cold atoms
ORAL
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.
*This work is supported by the U.S. Army Research Laboratory and the U.S. Army Research Office under Grant Number W911NF2110120.DC acknowledges financial support from the Ministerio de Ciencia e Innovacion of Spain, Grant No. PID2019-105316GB-I00.
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Publication: Physical Review Research 4, 043211 (2022)
Presenters
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Samir Bali
- Miami University