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arXiv 2009.02889physics.atom-phquant-ph
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Lu $^+$光钟中的超精细介导效应

Hyperfine-mediated effects in a Lu$^+$ optical clock

Zhiqiang Zhang, K. J. Arnold, R. Kaewuam, M. S. Safronova, M. D. Barrett

摘要:

我们考虑超精细介导的影响,时钟转换在$^{176}$卢$^+$。由于超精细相互作用引起的精细结构能级的混合,对给定态的Landé $g$因子和四极矩产生了修正。显式表达式推导出$g$因子和四极校正,其中领先的顺序项产生的核磁偶极耦合。对$^1S_0$和$^3D_1$超精细能级的$g$因子进行了高精度的测量,并提供了首阶修正项的实验测定。

英文摘要:

We consider hyperfine-mediated effects for clock transitions in $^{176}$Lu$^+$. Mixing of fine structure levels due to the hyperfine interaction bring about modifications to Landé $g$-factors and the quadrupole moment for a given state. Explicit expressions are derived for both $g$-factor and quadrupole corrections, for which leading order terms arise from the nuclear magnetic dipole coupling. High accuracy measurements of the $g$-factors for the $^1S_0$ and $^3D_1$ hyperfine levels are carried out, which provide an experimental determination of the leading order correction terms.

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