期刊
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
卷 35, 期 3, 页码 500-503出版社
OPTICAL SOC AMER
DOI: 10.1364/JOSAB.35.000500
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资金
- Natural Science Foundation of Zhejiang Province [LZ18A040001]
- National Natural Science Foundation of China (NSFC) [91636104]
We reported a simple scheme of producing Bose-Einstein condensate (BEC) in a dimple trap. Starting from a regular magneto-optical trap (MOT), we apply a temporal dark MOT to increase the atom density and directly load atoms into a crossed dipole trap. In order to make the trap frequency relatively high at the end of evaporation, a tight dimple is added. Such a scheme ensures relatively high trap volume for loading atoms and high trap frequency for evaporative cooling. The BEC phase transition is observed after 12 s evaporation. Furthermore, we demonstrated the manipulation of the hyperfine states with a Raman coupling, which is very useful for studying many-body physics via Ramsey or spin-echo spectroscopy. (C) 2018 Optical Society of America
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