期刊
PHYSICAL REVIEW A
卷 92, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.92.053842
关键词
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资金
- European Union
- Bundesministerium fur Bildung und Forschung via IKT
- Deutsche Forschungsgemeinschaft via NIM
We experimentally study the breakdown of hyperfine coupling for an atom in a deep optical-dipole trap. One-color laser spectroscopy is performed at the resonance lines of a single Rb-87 atom for a trap wavelength of 1064 nm. Evidence of hyperfine breakdown comes from three observations, namely, a nonlinear dependence of the transition frequencies on the trap intensity, a splitting of lines which are degenerate for small intensities, and the ability to drive transitions which would be forbidden by selection rules in the absence of hyperfine breakdown. From the data, we infer the hyperfine interval of the 5P(1/2) state and the scalar and tensor polarizabilities for the 5P(3/2) state.
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