Precision determination of the ground-state hyperfine splitting of trapped 113Cd+ ions

被引：14

作者：

Miao, S. N. ^{[1
]}

Zhang, J. W. ^{[1
]}

Qin, H. R. ^{[2
]}

Xin, N. C. ^{[1
]}

Han, J. Z. ^{[1
]}

Wang, L. J. ^{[1
,2
]}

机构：

[1] Tsinghua Univ, Dept Precis Instrument, Minist Educ,Key Lab Photon Measurement & Control, State Key Lab Precis Measurement Technol & Instru, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China

来源：

OPTICS LETTERS | 2021年 / 46卷 / 23期

基金：

中国国家自然科学基金;

关键词：

FREQUENCY;

D O I：

10.1364/OL.444045

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We measured the ground-state hyperfine splitting of trapped Cd-113(+) ions to be 15199862855.02799(27) Hz with a fractional uncertainty of 1.8 x 10(-14). The ions were trapped and laser-cooled in a linear quadrupole Paul trap. The fractional frequency stability was measured to be 4.2 x 10(-13)/root tau, obtained from Ramsey fringes of high signal-to-noise ratios and taken over a measurement time of nearly 5 h, which is close to the short-term stability limit estimated from the Dick effect. Our result is consistent with previously reported values, but the measurement precision is four times better than the best result obtained to date. (C) 2021 Optica Publishing Group

引用

页码：5882 / 5885

页数：4

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