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arXiv 0907.2906cond-mat.quant-gas
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超冷原子的非谐共振及其探测

Anharmonicity Induced Resonances for Ultracold Atoms and their Detection

J. P. Kestner, L. -M. Duan

摘要:

当两个原子在非简谐势作用下相互作用时,如在光晶格中,质心运动不能与相对运动分离。除了产生约束诱导共振(或改变现有的费什巴赫共振的位置),外部电势通过引入新的共振定性地改变了共振图像,其中分子激发的质心状态越过散射阈值。我们证明了这些共振的存在,给出了它们在光学超晶格中的定量表征,并提出了一个实验方案,通过控制扫描的磁场来检测它们。

英文摘要:

When two atoms interact in the presence of an anharmonic potential, such as an optical lattice, the center of mass motion cannot be separated from the relative motion. In addition to generating a confinement-induced resonance (or shifting the position of an existing Feshbach resonance), the external potential changes the resonance picture qualitatively by introducing new resonances where molecular excited center of mass states cross the scattering threshold. We demonstrate the existence of these resonances, give their quantitative characterization in an optical superlattice, and propose an experimental scheme to detect them through controlled sweeping of the magnetic field.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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