Optical resonance shifts in the fluorescence of thermal and cold atomic gases

Authors :: Jenkins, S. D.
Ruostekoski, J.
Javanainen, J.
Bourgain, R.
Jennewein, S.
Sortais, Y. R. P.
Browaeys, A.
Source :: Phys. Rev. Lett. 116 (2016) 183601
Publication Year :: 2016
Abstract: We show that the resonance shifts in the fluorescence of a cold gas of rubidium atoms substantially differ from those of thermal atomic ensembles that obey the standard continuous medium electrodynamics. The analysis is based on large-scale microscopic numerical simulations and experimental measurements of the resonance shifts in a steady-state response in light propagation.<br />Comment: To appear in Phys. Rev. Lett