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Optics Communications

Evolution of collective N atom states in single photon superradiance: Effect of virtual Lamb shift processes

Anatoly A. Svidzinsky, Marlan O. Scully

Published May 5, 2009• 48 citations
Publisher
DOI
10.1016/j.optcom.2009.04.011

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The collective Lamb shift and associated radiative decay of a large cloud of radius R containing N atoms uniformly excited by one photon of wavelength lambda is analyzed. It is shown that the time evolution of the symmetric state prepared by single photon absorption in the limit R>>lambda is similar to that encountered in the Dicke limit of small sample (R<<lambda) superradiance. The theory includes virtual (counterrotating) terms naturally and thus provides a simple calculation of the collective Lamb shift of a single Dicke state.