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Diffusing-wave spectroscopy of cold atoms in ballistic motion

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Autor(es):
Eloy, Aurelien ; Yao, Zhibin ; Bachelard, Romain ; Guerin, William ; Fouche, Mathilde ; Kaiser, Robin
Número total de Autores: 6
Tipo de documento: Artigo Científico
Fonte: PHYSICAL REVIEW A; v. 97, n. 1, p. 7-pg., 2018-01-05.
Resumo

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. (AU)

Processo FAPESP: 15/50422-4 - 123: dimensionality and cooperativity
Beneficiário:Philippe Wilhelm Courteille
Modalidade de apoio: Auxílio à Pesquisa - Regular
Processo FAPESP: 14/01491-0 - Nuvens atômicas sob estresse
Beneficiário:Romain Pierre Marcel Bachelard
Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores