Coherent light propagation through cold atomic clouds beyond the independent scattering approximation - Sorbonne Université
Journal Articles Physical Review A : Atomic, molecular, and optical physics [1990-2015] Year : 2019

Coherent light propagation through cold atomic clouds beyond the independent scattering approximation

David Wilkowski
Dominique Delande

Abstract

We calculate the relative permittivity of a cold atomic gas under weak probe illumination, up to second order in the density. Within the framework of a diagrammatic representation method, we identify all the second order diagrams that enter into the description of the relative permittivity for coherent light transmission. These diagrams originate from pairwise position correlation and recurrent scattering. Using coupled dipole equations, we numerically simulate the coherent transmission with scalar and vector waves, and find good agreement with the perturbative calculations. We applied this perturbative expansion approach to a classical gas at rest, but the method is extendable to thermal gas with finite atomic motion and to quantum gases where non-trivial pair correlations can be naturally included.
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Dates and versions

hal-02167726 , version 1 (28-06-2019)

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Chang Chi C Kwong, David Wilkowski, Dominique Delande, Romain Pierrat. Coherent light propagation through cold atomic clouds beyond the independent scattering approximation. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2019, 99 (4), pp.id.043806. ⟨10.1103/PhysRevA.99.043806⟩. ⟨hal-02167726⟩
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