Coherence and linewidth of a continuously pumped atom laser at finite temperature

Lee, Geoffrey M., Haine, Simon A., Bradley, Ashton S. and Davis, Matthew J. (2015) Coherence and linewidth of a continuously pumped atom laser at finite temperature. Physical Review A - Atomic, Molecular, and Optical Physics, 92 1: 013605-1-013605-6. doi:10.1103/PhysRevA.92.013605

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads

Author Lee, Geoffrey M.
Haine, Simon A.
Bradley, Ashton S.
Davis, Matthew J.
Title Coherence and linewidth of a continuously pumped atom laser at finite temperature
Journal name Physical Review A - Atomic, Molecular, and Optical Physics   Check publisher's open access policy
ISSN 1094-1622
1050-2947
Publication date 2015-07-06
Year available 2015
Sub-type Article (original research)
DOI 10.1103/PhysRevA.92.013605
Open Access Status File (Publisher version)
Volume 92
Issue 1
Start page 013605-1
End page 013605-6
Total pages 6
Place of publication College Park, MD United States
Publisher American Physical Society
Language eng
Abstract A continuous-wave atom laser formed by the outcoupling of atoms from a trapped Bose-Einstein condensate (BEC) potentially has a range of metrological applications. However, in order for the device to be truly continuous, a mechanism to replenish the atoms in the BEC is required. Here we calculate the temporal coherence properties of a continuously pumped atom laser beam outcoupled from a trapped Bose-Einstein condensate that is replenished from a reservoir at finite temperature. We find that the thermal fluctuations of the condensate can significantly decrease the temporal coherence of the output beam due to atomic interactions between the trapped BEC and the beam, and this can impact the metrological usefulness of the device. We demonstrate that a Raman outcoupling scheme imparting a sufficient momentum kick to the atom laser beam can lead to a significantly reduced linewidth.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2016 Collection
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 1 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 1 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 28 Jul 2015, 10:24:17 EST by System User on behalf of School of Mathematics & Physics