Details
| Original language | English |
|---|---|
| Pages (from-to) | 3146-3149 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 79 |
| Issue number | 17 |
| Publication status | Published - 1997 |
Abstract
We demonstrate a new method to directly measure, from the overlap of two atomic wave packets, the spatial correlation function of metastable helium atoms cooled by velocity selective coherent population trapping. This approach allows us to determine precisely the effective temperature of the atoms and to make quantitative comparison with theory. Temperatures as low as 1/800 of the recoil temperature are found. Moreover, we extend this method to realize a temporal interferometer with de Broglie matter waves in the subrecoil regime.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Physical review letters, Vol. 79, No. 17, 1997, p. 3146-3149.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Direct measurement of the spatial correlation function of ultracold atoms
AU - Saubaméa, B.
AU - Hijmans, T. W.
AU - Kulin, S.
AU - Rasel, E.
AU - Peik, E.
AU - Leduc, M.
AU - Cohen-Tannoudji, C.
PY - 1997
Y1 - 1997
N2 - We demonstrate a new method to directly measure, from the overlap of two atomic wave packets, the spatial correlation function of metastable helium atoms cooled by velocity selective coherent population trapping. This approach allows us to determine precisely the effective temperature of the atoms and to make quantitative comparison with theory. Temperatures as low as 1/800 of the recoil temperature are found. Moreover, we extend this method to realize a temporal interferometer with de Broglie matter waves in the subrecoil regime.
AB - We demonstrate a new method to directly measure, from the overlap of two atomic wave packets, the spatial correlation function of metastable helium atoms cooled by velocity selective coherent population trapping. This approach allows us to determine precisely the effective temperature of the atoms and to make quantitative comparison with theory. Temperatures as low as 1/800 of the recoil temperature are found. Moreover, we extend this method to realize a temporal interferometer with de Broglie matter waves in the subrecoil regime.
UR - http://www.scopus.com/inward/record.url?scp=5844246901&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.79.3146
DO - 10.1103/PhysRevLett.79.3146
M3 - Article
AN - SCOPUS:5844246901
VL - 79
SP - 3146
EP - 3149
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 17
ER -