Superradiance in a Large Cloud of Cold Atoms in the Linear-Optics Regime - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2016

Superradiance in a Large Cloud of Cold Atoms in the Linear-Optics Regime

Résumé

Superradiance has been extensively studied in the 1970s and 1980s in the regime of superfluores-cence, where a large number of atoms are initially excited. Cooperative scattering in the linear-optics regime, or " single-photon superradiance " , has been investigated much more recently, and superra-diant decay has also been predicted, even for a spherical sample of large extent and low density. Here, we demonstrate this effect experimentally by directly measuring the decay rate of the off-axis fluorescence of a large and dilute cloud of cold atoms after the sudden switch-off of a low-intensity laser driving the atomic transition. We show that, at large detuning, the decay rate increases with the on-resonance optical depth. In contrast to forward scattering, the superradiant decay of off-axis fluorescence is suppressed near resonance due to attenuation and multiple-scattering effects.
Fichier principal
Vignette du fichier
Araujo_superradiance.pdf (223.72 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-01292400 , version 1 (23-03-2016)
hal-01292400 , version 2 (01-09-2016)

Identifiants

Citer

Michelle O. Araújo, Ivor Kresic, Robin Kaiser, William Guerin. Superradiance in a Large Cloud of Cold Atoms in the Linear-Optics Regime. 2016. ⟨hal-01292400v1⟩
77 Consultations
212 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More