期刊
PHYSICAL REVIEW A
卷 91, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.91.061402
关键词
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资金
- Region Ile-de-France
- RTRA Triangle de la Physique
- European Research Council
- LabEx PALM [ANR-10-LABX-0039]
- International Balzan Prize Foundation
- Direction Generale de l'Armement
- Institut Francilien de Recherche sur les Atomes Froids
We report on the Bose-Einstein condensation of metastable He-4 atoms using a hybrid approach, consisting of a magnetic quadrupole and an optical dipole trap. In our setup we cross the phase transition with 2 x 10(6) atoms, and we obtain pure condensates of 5 x 10(5) atoms in the optical trap. This approach to cooling He-4 provides enhanced cycle stability, large optical access to the atoms and results in the production of a condensate every 6 s-a factor 2 faster than the state of the art. This speed-up will significantly reduce the data acquisition time needed for the measurement of many particle correlations, made possible by the ability of metastable helium atoms to be detected individually.
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