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Article Dans Une Revue Physical Review A : Atomic, molecular, and optical physics [1990-2015] Année : 2018

Diffusing-Wave Spectroscopy of Cold Atoms in Ballistic Motion

Aurélien Eloy
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  • PersonId : 1020198
Zhibin Yao
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  • PersonId : 1020199
  • IdRef : 266941648
Romain Bachelard
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William Guerin
Mathilde Fouché
Robin Kaiser

Résumé

Diffusing-wave spectroscopy is a powerful technique which consists in measuring the temporal correlation function of the intensity of light multiply scattered by a medium. In this paper, we apply this technique to cold atoms under purely ballistic motion and we investigate the transition between the single and the multiple scattering regime. The intensity correlation function changes from a simple Gaussian function, whose width reveals the sample temperature, to a more complex decay shortened by the frequency redistribution in the thick cloud. These features are quantitatively compared to simulations with a phase-coherent and an incoherent model. Both show a very good agreement with the experiments.
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Dates et versions

hal-01611345 , version 1 (05-10-2017)
hal-01611345 , version 2 (03-01-2018)

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Aurélien Eloy, Zhibin Yao, Romain Bachelard, William Guerin, Mathilde Fouché, et al.. Diffusing-Wave Spectroscopy of Cold Atoms in Ballistic Motion. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2018, 97, pp.013810. ⟨10.1103/PhysRevA.97.013810⟩. ⟨hal-01611345v2⟩
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