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

Jenkins, S.D. and Ruostekoski, J. and Javanainen, J. and Bourgain, R. and Jennewein, S. and Sortais, Y.R.P. and Browaeys, A. (2016) Optical resonance shifts in the fluorescence of thermal and cold atomic gases. Physical review letters, 116 (18): 183601. ISSN 1079-7114

Abstract

We show that the resonance shifts in 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.