Laser cooling of atoms in optical lattices including quantum statistics and dipole-dipole interactions
Year: 1999
Authors: Menotti C., Ritsch H.
Autors Affiliation: Scuola Normale Super Pisa, I-56126 Pisa, Italy; Univ Pisa, Dipartimento Fis, Unita INFM, I-56126 Pisa, Italy; Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria.
Abstract: We develop a mean-field approach to include dipole-dipole interactions and quantum statistics in the atomic dynamics in bright and dark optical lattices including the proper spatial potentials instead of a simple delta-approximation. For classical distinguishable particles the results are even quantitatively similar to the properly scaled delta-function model. As the dominant effect bright and dark lattices exhibit opposite shifts in the lattice band energies and differ in their localisation properties as a function of density. The spatial-dependent potential allows strong modifications also in dark lattices, but the main conclusions obtained in the delta-approximation turn out to be still valid. Interestingly, important quantitative differences from the delta-model can occur as far as the effect of statistics in concerned, especially for fermions. We study the quantum statistical effects as a function of detuning and lattice well depths and identify the case of lattices with deep wells and large detunings as the preferred parameter region to observe them.
Journal/Review: APPLIED PHYSICS B-LASERS AND OPTICS
Volume: 69 (4) Pages from: 311 to: 321
KeyWords: Bragg-diffraction; Spatial Order; Equations; Molasses; Dynamics; LightDOI: 10.1007/s003400050811Citations: 4data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-11-17References taken from IsiWeb of Knowledge: (subscribers only)