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arXiv 1504.01285physics.atom-ph
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$^{138}$ Ba $^{+}$离子跃迁频率的测定

Determination of transition frequencies in a single $^{138}$Ba$^{+}$ ion

E. A. Dijck, M. Nuñez Portela, A. T. Grier, K. Jungmann, A. Mohanty, N. Valappol, L. Willmann

备注：
5 pages, 7 figures, submitted to Phys. Rev. A
发表信息：
Phys. Rev. A 91, 060501(R) (2015)
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摘要：

用激光光谱光学频率梳测量了单个囚禁的$^{138}$ Ba $^{+}$离子低能级间的跃迁频率。通过使用八能级光学布洛赫模型提取线形的单光子和双光子分量的频率，我们实现了5d $^{2}$ D $_{3/2}$ - 6p $^{2}$ P $_{1/2}$和6s $^{2}$ S $_{1/2}$ - 5d $^{2}$ D $_{3/2}$跃迁频率的0.1 MHz精度，以及6s $^{2}$ S $_{1/2}$ - 6p $^{2}$ P $_{1/2}$跃迁频率的0.2 MHz精度。

英文摘要：

Transition frequencies between low-lying energy levels in a single trapped $^{138}$Ba$^{+}$ ion have been measured with laser spectroscopy referenced to an optical frequency comb. By extracting the frequencies of one-photon and two-photon components of the line shape using an eight-level optical Bloch model, we achieved 0.1 MHz accuracy for the 5d $^{2}$D$_{3/2}$ - 6p $^{2}$P$_{1/2}$ and 6s $^{2}$S$_{1/2}$ - 5d $^{2}$D$_{3/2}$ transition frequencies, and 0.2 MHz for the 6s $^{2}$S$_{1/2}$ - 6p $^{2}$P$_{1/2}$ transition frequency.

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