Light transport in cold atoms and thermal decoherence

Details Light transport in cold atoms and thermal decoherence Light transport in cold atoms and thermal decoherence

2006-03-17

arxiv.org/abs/quant-ph/0603153v1

Physical Review Letters 97 (07/07/2006) 013004

Physics

Quantum Physics

4 pages - submitted to Physical Review Letters

Scientific paper

10.1103/PhysRevLett.97.013004

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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