Single atoms transferring between a magneto-optical trap and a far-off-resonance optical dipole trap |
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| Authors: | He Jun Wang Jing Yang Bao-Dong Zhang Tian-Cai and Wang Jun-Min |
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| Affiliation: | State Key Laboratory of Quantum Optics and Quantum Optics
Devices
(Shanxi University),
and Institute of Opto-Electronics, Shanxi University,
Taiyuan 030006, China |
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| Abstract: | Based on our work on single cesium atoms trapped in a
large-magnetic-gradient vapour-cell magneto-optical trap (MOT), the
signal-to-noise ratio (SNR) is remarkably improved. Also a
far-off-resonance optical dipole trap (FORT) formed by a
strongly-focused 1064~nm single frequency Nd:YVO4 laser beam is
introduced. One cesium atom is prepared in the MOT, and then it can
transfer successfully between the MOT and the FORT which is
overlapped with the MOT. Utilizing the effective transfer, the
lifetime of single atoms trapped in the FORT is measured to be
6.9± 0.3~s. Thus we provide a system where the atomic qubit can
be coherently manipulated. |
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| Keywords: | single atoms magneto-optical
trap far-off-resonance optical dipole trap lifetime of single atoms |
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