Lévy flights of photons in hot atomic vapours - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2009

Lévy flights of photons in hot atomic vapours

Résumé

Gaussian distributions are often used to study properties of random and fluctuating systems. However, in a number of situations, rare events have drastic consequences, which can not be explained by Gaussian statistics. Considerable efforts have thus been devoted to the study of non Gaussian fluctuations such as Lévy statistics, generalizing the standard description of random walks. Unfortunately only macroscopic signatures, obtained by averaging over many random steps, are usually observed in physical systems. We present experimental results investigating the elementary process of anomalous diffusion of photons in hot atomic vapours. We measure the step size distribution of the random walk and shows that it follows a power law characteristic of Lévy flights.
Fichier principal
Vignette du fichier
Levy_v1.pdf (4.04 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-00375841 , version 1 (16-04-2009)
hal-00375841 , version 2 (10-08-2009)
hal-00375841 , version 3 (17-11-2009)

Identifiants

Citer

Nicolas Mercadier, William Guerin, Martine Chevrollier, Robin Kaiser. Lévy flights of photons in hot atomic vapours. 2009. ⟨hal-00375841v1⟩
174 Consultations
175 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More