Bulletin of the American Physical Society
52nd Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 66, Number 6
Monday–Friday, May 31–June 4 2021; Virtual; Time Zone: Central Daylight Time, USA
Session F01: Poster Session I 4pm-6pm CDT
4:00 PM,
Tuesday, June 1, 2021
Abstract: F01.00010 : Precision measurement of D2 line transition in a single trapped 25Mg+ ion*
Presenter:
Peng Hao
(Huazhong University of Science & Technology)
Authors:
Peng Hao
(Huazhong University of Science & Technology)
Zhiyu Ma
(Huazhong University of Science & Technology)
Wenzhe Wei
(Huazhong University of Science & Technology)
Zhuo Deng
(Huazhong University of Science & Technology)
Huixing Zhang
(Huazhong University of Science & Technology)
Liren Pang
(Huazhong University of Science & Technology)
Hongli Liu
(Huazhong University of Science & Technology)
Yuanbo Du
(Huazhong University of Science & Technology)
Wenhao Yuan
(Huazhong University of Science & Technology)
Ke Deng
(Huazhong University of Science & Technology)
Jie Zhang
(Huazhong University of Science & Technology)
Zehuang Lu
(Huazhong University of Science & Technology)
Collaboration:
MOE Key Laboratory of Fundamental Quantities Measurement, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
We employ the decoherence-assisted method [2] to obtain the D2 hyperfine transitions of a single 25Mg+ ion. The hyperfine transitions (|2S1/2, mF=0 > to| 2P3/2, mF=0>) we measured are insensitive to magnetic field and the branching ratios of the spontaneous decay. And the ion is trapped in a linear Paul trap and cooled to the Doppler cooling limit to reduce the inhomogeneous broadening. To minimize the influence of the laser linewidth, the spectroscopy laser is locked to an optical frequency comb that is referenced to a Hydrogen maser, and the frequency of the locked laser is measured by another frequency comb. In addition, we compensate the polarization of the spectroscopy laser to avoid undesired transitions in the D2 line. Finally, we get symmetric Voigt line profile with high signal-to-noise ratios by preparing the 25Mg+ ion to different initial state. With these hyperfine transitions, we obtain a preliminary D2 transition frequency of 1072084555.5 MHz with an uncertainty of 0.6 MHz, which is 8 times better than the result of G. Clos et al. [2].
*The project is supported by the National Natural Science Foundation of China (Grant No. 11774108).
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