Light propagation in two-dimensional cold atomic clouds with positional correlations

B. X. Wang; C. Y. Zhao

doi:10.1117/12.2537226

19 November 2019 Light propagation in two-dimensional cold atomic clouds with positional correlations

B. X. Wang, C. Y. Zhao

Proceedings Volume 11195, Quantum and Nonlinear Optics VI; 111950J (2019) https://doi.org/10.1117/12.2537226
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

Abstract

Light propagation in disordered media is a fundamental and important problem in optics and photonics. In particular, engineering light-matter interaction in disordered cold atomic ensembles is one of the central topics in modern quantum and atomic optics. The collective response of dense atomic gases under light excitation, which crucially depends on the spatial distribution of atoms and the geometry of the ensemble, has important impacts on quantum technologies like quantum sensors, atomic clocks and quantum information storage. Here we analyze near-resonant light transmission in two-dimensional dense ultracold atomic ensembles with short-range positional correlations. Based on the coupled-dipole simulations under different atom number densities and correlation lengths, we show that the collective effects are strongly influenced by those positional correlations, manifested as significant shifts and broadening or narrowing of transmission resonance lines. We also analyze the eigenstate distribution of different atomic ensembles. This work may provide profound implications on collective and cooperative effects in cold atomic ensembles as well as the study of mesoscopic physics concerning light transport in strongly scattering disorder media.

Citation Download Citation

B. X. Wang and C. Y. Zhao "Light propagation in two-dimensional cold atomic clouds with positional correlations", Proc. SPIE 11195, Quantum and Nonlinear Optics VI, 111950J (19 November 2019); https://doi.org/10.1117/12.2537226

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