Theoretical calculation of the quadratic Zeeman shift coefficient of the 3P0o clock state for strontium optical lattice clock

被引：3
作者：
Lu, Benquan [1 ]
Lu, Xiaotong [1 ]
Li, Jiguang [3 ]
Chang, Hong [1 ,2 ]
机构：
[1] Natl Time Serv Ctr, Xian 710000, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100088, Peoples R China
[3] Inst Appl Phys & Computat Math, Beijing 100088, Peoples R China
来源：
CHINESE PHYSICS B | 2022年 / 31卷 / 04期
基金：
中国科学院西部之光基金; 中国国家自然科学基金;
关键词：
optical lattice clock; quadratic Zeeman shift coefficient; strontium; ACCURACY;
D O I：
10.1088/1674-1056/ac29a6
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In the weak-magnetic-field approximation, we derived an expression of quadratic Zeeman shift coefficient of P-3(0)o clock state for Sr-88 and Sr-87 atoms. By using this formula and the multi-configuration Dirac-Hartree-Fock theory, the quadratic Zeeman shift coefficients were calculated. The calculated values C-2 = -23.38(5) MHz/T-2 for Sr-88 and the P-3(0)o, F = 9/2, M-F = +/- 9/2 clock states for Sr-87 agree well with the other available theoretical and experimental values, especially the most accurate measurement recently. In addition, the calculated values of the P-3(0)o, F = 9/2, M-F = +/- 9/2 clock states were also determined in our Sr-87 optical lattice clock. The consistency with measurements verifies the validation of our calculation model. Our theory is also useful to evaluate the second-order Zeeman shift of the clock transition, for example, the new proposed S-1(0), F = 9/2, M-F = +/- 5/2-P-3(0)o, F = 9/2, M-F = +/- 3/2 transitions.
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页数：6
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