Two-point density correlations of quasicondensates in free expansion
Mazets, I. E.
Schumm, T.Note: Order does not necessarily reflect citation order of authors.
MetadataShow full item record
CitationManz, S., R. Bücker, T. Betz, Ch. Koller, S. Hofferberth, I. E. Mazets, A. Imambekov, et al. 2010. “Two-Point Density Correlations of Quasicondensates in Free Expansion.” Physical Review A 81 (3) (March 25). doi:10.1103/physreva.81.031610.
AbstractWe measure the two-point density correlation function of freely expanding quasicondensates in the weakly interacting quasi-one-dimensional (1D) regime. While initially suppressed in the trap, density fluctuations emerge gradually during expansion as a result of initial phase fluctuations present in the trapped quasicondensate. Asymptotically, they are governed by the thermal coherence length of the system. Our measurements take place in an intermediate regime where density correlations are related to near-field diffraction effects and anomalous correlations play an important role. Comparison with a recent theoretical approach described by Imambekov et al. yields good agreement with our experimental results and shows that density correlations can be used for thermometry of quasicondensates.
Citable link to this pagehttp://nrs.harvard.edu/urn-3:HUL.InstRepos:26370386
- FAS Scholarly Articles