Cooperative fluorescence from a strongly driven dilute cloud of atoms

Johan Raunkjær Ott, Martijn Wubs, Peter Lodahl, N. Asger Mortensen, R. Kaiser

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We investigate cooperative fluorescence in a dilute cloud of strongly driven two-level emitters. Starting from the Heisenberg equations of motion, we compute the first-order scattering corrections to the saturation of the excited-state population and to the resonance-fluorescence spectrum, which both require going beyond the state-of-the-art linear-optics approach to describe collective phenomena. A dipole blockade is observed due to long-range dipole-dipole coupling that vanishes at stronger driving fields. Furthermore, we compute the inelastic component of the light scattered by a cloud of many atoms and find that the Mollow triplet is affected by cooperativity. In a lobe around the forward direction, the inelastic Mollow triplet develops a spectral asymmetry, observable under experimental conditions.
TidsskriftPhysical Review A
Udgave nummer6
Sider (fra-til)061801
Antal sider5
StatusUdgivet - 2013
Udgivet eksterntJa


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