Details
| Original language | English |
|---|---|
| Journal | Physical review letters |
| Volume | 87 |
| Issue number | 16 |
| Publication status | Published - 1 Oct 2001 |
Abstract
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.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Physical review letters, Vol. 87, No. 16, 01.10.2001.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Observation of phase fluctuations in elongated bose-einstein condensates
AU - Dettmer, S.
AU - Hellweg, D.
AU - Ryytty, P.
AU - Arlt, J. J.
AU - Ertmer, W.
AU - Sengstock, K.
AU - Petrov, D. S.
AU - Shlyapnikov, G. V.
AU - Kreutzmann, H.
AU - Santos, L.
AU - Lewenstein, M.
PY - 2001/10/1
Y1 - 2001/10/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=37649030128&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.87.160406
DO - 10.1103/PhysRevLett.87.160406
M3 - Article
AN - SCOPUS:37649030128
VL - 87
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 16
ER -