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arXiv 0709.0130physics.atom-ph
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碱金属原子np-ns跃迁的幻波长

Magic wavelengths for the np-ns transitions in alkali-metal atoms

Bindiya Arora, M. S. Safronova, Charles W. Clark

摘要:

用相对论全阶方法对碱金属原子的电偶极矩阵元进行了广泛的计算。这种方法是一个线性化版本的耦合集群方法,它总结了无限多体微扰理论的条款。在这些计算中考虑了最低ns,np_1/2,np_3/2态和大量激发态之间的所有允许跃迁,并评估了它们的准确性。由此得到的电偶极矩阵元用于碱金属原子激发态的频率依赖极化率的高精度计算。我们发现碱金属原子中的幻波长,其ns和np_1/2和np_3/2原子能级具有相同的交流斯塔克位移,这有利于状态不敏感的光学冷却和捕获。

英文摘要:

Extensive calculations of the electric-dipole matrix elements in alkali-metal atoms are conducted using the relativistic all-order method. This approach is a linearized version of the coupled-cluster method, which sums infinite sets of many-body perturbation theory terms. All allowed transitions between the lowest ns, np_1/2, np_3/2 states and a large number of excited states are considered in these calculations and their accuracy is evaluated. The resulting electric-dipole matrix elements are used for the high-precision calculation of frequency-dependent polarizabilities of the excited states of alkali-metal atoms. We find magic wavelengths in alkali-metal atoms for which the ns and np_1/2 and np_3/2 atomic levels have the same ac Stark shifts, which facilitates state-insensitive optical cooling and trapping.

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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