Change search
ReferencesLink to record
Permanent link

Direct link
Bimodal momentum distribution of laser-cooled atoms in optical lattices
Stockholm University, Faculty of Science, Department of Physics.
Number of Authors: 4
2016 (English)In: Physical Review A, ISSN 2469-9926, Vol. 93, no 5, 053416Article in journal (Refereed) Published
Abstract [en]

We study, numerically and experimentally, the momentum distribution of atoms cooled in optical lattices. Using semiclassical simulations, we show that this distribution is bimodal, made up of a central feature corresponding to cold, trapped atoms, with tails of hot, untrapped atoms, and that this holds true also for very shallow potentials. Careful analysis of the distribution of high-momentum untrapped atoms, both from simulations and experiments, shows that the tails of the distribution do not follow a normal law, hinting at a power-law distribution and nonergodic behavior. We also revisit the phenomenon leading to the existence of an optimal cooling point, i.e., a potential depth below which the temperature of the atoms starts increasing.

Place, publisher, year, edition, pages
2016. Vol. 93, no 5, 053416
National Category
Physical Sciences
URN: urn:nbn:se:su:diva-131523DOI: 10.1103/PhysRevA.93.053416ISI: 000376242200007OAI: diva2:945903
Available from: 2016-07-04 Created: 2016-06-21 Last updated: 2016-07-04Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Jonsell, Svante
By organisation
Department of Physics
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 5 hits
ReferencesLink to record
Permanent link

Direct link