Details
| Original language | English |
|---|---|
| Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
| Volume | 68 |
| Issue number | 5 |
| Publication status | Published - 1 Jan 2003 |
Abstract
The coherence properties of phase fluctuating Bose-Einstein condensates are studied both theoretically and experimentally. We derive a general expression for the N-particle correlation function of a condensed Bose gas in a highly elongated trapping potential. The second-order correlation function is analyzed in detail, and an interferometric method to directly measure it is discussed and experimentally implemented. Using a Bragg diffraction interferometer, we measure intensity correlations in the interference pattern generated by two spatially displaced copies of a parent condensate. Our experiment demonstrates how to characterize the second-order correlation function of a highly elongated condensate and to measure its phase coherence length.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
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In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 68, No. 5, 01.01.2003.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Second-order correlation function of a phase fluctuating Bose-Einstein condensate
AU - Cacciapuoti, L.
AU - Hellweg, D.
AU - Kottke, M.
AU - Schulte, T.
AU - Ertmer, W.
AU - Arlt, J. J.
AU - Sengstock, K.
AU - Santos, L.
AU - Lewenstein, M.
PY - 2003/1/1
Y1 - 2003/1/1
N2 - The coherence properties of phase fluctuating Bose-Einstein condensates are studied both theoretically and experimentally. We derive a general expression for the N-particle correlation function of a condensed Bose gas in a highly elongated trapping potential. The second-order correlation function is analyzed in detail, and an interferometric method to directly measure it is discussed and experimentally implemented. Using a Bragg diffraction interferometer, we measure intensity correlations in the interference pattern generated by two spatially displaced copies of a parent condensate. Our experiment demonstrates how to characterize the second-order correlation function of a highly elongated condensate and to measure its phase coherence length.
AB - The coherence properties of phase fluctuating Bose-Einstein condensates are studied both theoretically and experimentally. We derive a general expression for the N-particle correlation function of a condensed Bose gas in a highly elongated trapping potential. The second-order correlation function is analyzed in detail, and an interferometric method to directly measure it is discussed and experimentally implemented. Using a Bragg diffraction interferometer, we measure intensity correlations in the interference pattern generated by two spatially displaced copies of a parent condensate. Our experiment demonstrates how to characterize the second-order correlation function of a highly elongated condensate and to measure its phase coherence length.
UR - http://www.scopus.com/inward/record.url?scp=84891670203&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.68.053612
DO - 10.1103/PhysRevA.68.053612
M3 - Article
AN - SCOPUS:84891670203
VL - 68
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
SN - 1050-2947
IS - 5
ER -