Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Atom lasers from elongated quasi-condensates

Chris J. Vale, Otto Vainio, Matthew J. Davis, N. R. Heckenberg, Halina H. Rubinsztein-Dunlop

Published Jan 1, 2005• 0 citations
OpenAlex

Abstract

Phase fluctuations are characteristic of Bose-Einstein condensates in lower dimensions. We use atom laser output from condensates and quasi-condensates to probe their axial phase coherence properties.

Related papers

Phase coherence length of a Bose-Einstein condensate

Fabrice Gerbier, S. Richard, Joseph H. Thywissen +3 more

We report on the measurement of the momentum distribution of an elongated Bose-Einstein condensate. A broadening of the distribution with increasing temperature is observed, which is clear evidence for phase fluctuations in the sample.

•Oct 9, 2002•0 citations

Characterization and control of phase fluctuations in elongated Bose-Einstein condensates

H. Kreutzmann, Anna Sanpera, Luis Santos +8 more

arXiv:cond-mat/0210348•Applied Physics B•Feb 1, 2003•14 citations

Observation of Phase Fluctuations in Elongated Bose-Einstein Condensates

S. Dettmer, D. Hellweg, Pasi Ryytty +8 more

The occurrence of phase fluctuations due to thermal excitations in Bose-Einstein condensates (BECs) is studied for a variety of temperatures and trap geometries. We observe the statistical nature of the appearance of phase fluctuations and characterize the dependence of their average value on temperature, number of particles, and the trapping potential. We find pronounced phase fluctuations for condensates in very elongated traps in a broad temperature range. The results are of great importance for the realization of BEC in quasi-1D geometries, for matter wave interferometry with BECs, as well as for coherence properties of guided atom laser beams.

arXiv:cond-mat/0105525•Physical Review Letters•Oct 1, 2001•306 citations

Experimental Study on Atom Laser and Bose-Einstein Condensate

Lin -, Xia, Fan Fan +13 more

量子光学学报•Jan 1, 2006•0 citations

Atom interferometers, atom lasers and Bose-Einstein condensates: from coherent to quantum atom optics

Alain Aspect

•Sep 30, 2008•0 citations

Matter-Wave Interferometry with Phase Fluctuating Bose-Einstein Condensates

Gyu-Boong Jo, Jongsoo Choi, Caleb A. Christensen +4 more

Elongated Bose-Einstein condensates (BECs) exhibit strong spatial phase fluctuations even well below the BEC transition temperature. We demonstrate that atom interferometers using such condensates are robust against phase fluctuations; i.e., the relative phase of the split condensate is reproducible despite axial phase fluctuations. However, larger phase fluctuations limit the coherence time, especially in the presence of some asymmetries in the two wells of the interferometer.

arXiv:0706.4041•Physical Review Letters•Dec 14, 2007•73 citations
The occurrence of phase fluctuations due to thermal excitations in Bose-Einstein condensates (BECs) is studied for a variety of temperatures and trap geometries. We observe the statistical nature of the appearance of phase fluctuations and characterize the dependence of their average value on temperature, number of particles, and the trapping potential. We find pronounced phase fluctuations for condensates in very elongated traps in a broad temperature range. The results are of great importance for the realization of BEC in quasi-1D geometries, for matter wave interferometry with BECs, as well as for coherence properties of guided atom laser beams.