Evaporative cooling of a small number of atoms in a single-beam microscopic dipole trap

R Bourgain 1 J Pellegrino 1 A Fuhrmanek 1 Yvan R. P. Sortais 1 Antoine Browaeys 1
1 Laboratoire Charles Fabry / Optique quantique
LCF - Laboratoire Charles Fabry
Abstract : We demonstrate experimentally the evaporative cooling of a few hundred rubidium-87 atoms in a single-beam microscopic dipole trap. Starting with 800 atoms at a temperature of 125 μK, we produce an unpolarized sample of 40 atoms at 110 nK, within 3 s. The phase-space density at the end of the evaporation reaches unity, close to quantum degeneracy. The gain in phase-space density after evaporation is 10 3 . We find that the scaling laws used for much larger numbers of atoms are still valid despite the small number of atoms involved in the evaporative cooling process. We also compare our results to a simple kinetic model describing the evaporation process and find good agreement with the data.
Type de document :
Article dans une revue
Physical Review A, American Physical Society, 2013, 88, pp.23428 / arXiv:1305.3802. 〈10.1103/PhysRevA.88.023428〉
Liste complète des métadonnées

Littérature citée [35 références]  Voir  Masquer  Télécharger
https://hal-iogs.archives-ouvertes.fr/hal-01102107
Contributeur : Yvan R. P. Sortais <>
Soumis le : lundi 12 janvier 2015 - 10:14:19
Dernière modification le : jeudi 1 février 2018 - 14:50:03
Document(s) archivé(s) le : vendredi 11 septembre 2015 - 06:33:31

Fichiers

PRA88p023428a2013.pdf
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

Collections

IOGS | LCFIO | LCF_OQ | PARISTECH

Citation

R Bourgain, J Pellegrino, A Fuhrmanek, Yvan R. P. Sortais, Antoine Browaeys. Evaporative cooling of a small number of atoms in a single-beam microscopic dipole trap. Physical Review A, American Physical Society, 2013, 88, pp.23428 / arXiv:1305.3802. 〈10.1103/PhysRevA.88.023428〉. 〈hal-01102107〉

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de la notice

132

Téléchargements de fichiers

144

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD