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Light transport in cold atoms and thermal decoherence

Abstract : By using the coherent backscattering interference effect, we investigate experimentally and theoretically how coherent transport of light inside a cold atomic vapour is affected by the residual motion of atomic scatterers. As the temperature of the atomic cloud increases, the interference contrast dramatically decreases emphazising the role of motion-induced decoherence for resonant scatterers even in the sub-Doppler regime of temperature. We derive analytical expressions for the corresponding coherence time.
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Contributor : Dominique Delande <>
Submitted on : Friday, March 17, 2006 - 1:24:12 PM
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Guillaume Labeyrie, Dominique Delande, Robin Kaiser, Christian Miniatura. Light transport in cold atoms and thermal decoherence. Physical Review Letters, American Physical Society, 2006, 97 (1), pp.013004. ⟨10.1103/PhysRevLett.97.013004⟩. ⟨hal-00021119⟩



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