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Trapping of Neutral Atoms with a Radio-Frequency Field |
| ZHANG Hai-Chao;ZHANG Peng-Fei;XU Xin-Ping; HAN Jiu-Rong;WANG Yu-Zhu |
| Laboratory for Quantum Optics, Shaihai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 |
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| Cite this article: |
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ZHANG Hai-Chao, ZHANG Peng-Fei, XU Xin-Ping et al 2005 Chin. Phys. Lett. 22 83-86 |
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Abstract Based on the dressed-atom approach, we discuss a two-dimensional (2D) radio-frequency trap for neutral atoms, in which the trap potential derives from the magnetic-dipole transitions among the hyperfine Zeeman sublevels. By adjusting the detuning of the radiation from resonance, the trapping states will be changed predominantly from the bare states of mF gF > 0 to other states of mF gF < 0, where mF and gF are the quantum numbers of Zeeman sublevels and the Landé factor, respectively. This character contrasts finely with that of a static magnetic trap that can only trap or guide the states of mF gF > 0. In comparison to the optical field, the radio-frequency trap eliminates the spontaneous emission heating of the atoms. Unlike other oscillating traps reported in the literature, the configuration of the radio frequency trap is suitable for realization of a miniature magnetic guide.
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| Keywords:
32.80.Pj
42.50.Vk
39.10.+j
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Published: 01 January 2005
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