Getting into Shape: Efficient Cooling Scheme for Fermionic Atoms in Optical Lattices - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review A Année : 2009

Getting into Shape: Efficient Cooling Scheme for Fermionic Atoms in Optical Lattices

Fabrice Gerbier
Jean-Sebastien Bernier
  • Fonction : Auteur
Corinna Kollath
  • Fonction : Auteur
Antoine Georges
Lorenzo de Leo
  • Fonction : Auteur
Christophe Salomon
  • Fonction : Auteur
Michael Köhl
  • Fonction : Auteur

Résumé

We propose an experimental procedure to cool fermionic atoms loaded into an optical lattice. The central idea is to spatially divide the system into entropy-rich and -poor regions by shaping the confining potential profile. Atoms in regions of high entropy per particle are subsequently isolated from the system. We discuss how to experimentally carry out this proposal, and perform a quantitative study of its efficiency. We find that the entropy per particle, $s$, can typically be reduced by a factor of 10 such that entropies lower than $s/k_B \sim 0.2$ can be reached. Cooling into highly sought-after quantum phases (such as an antiferromagnet) can thus be achieved. We show that this procedure is robust against variations of the experimental conditions.

Dates et versions

hal-03363341 , version 1 (03-10-2021)

Identifiants

Citer

Fabrice Gerbier, Jean-Sebastien Bernier, Corinna Kollath, Antoine Georges, Lorenzo de Leo, et al.. Getting into Shape: Efficient Cooling Scheme for Fermionic Atoms in Optical Lattices. Physical Review A, 2009, ⟨10.1103/PhysRevA.79.061601⟩. ⟨hal-03363341⟩
11 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More