A combined magnetic field stabilization system for improving the stability of 40Ca+ optical clock

doi:10.1088/1674-1056/acf5d5

中国物理B ›› 2023, Vol. 32 ›› Issue (11): 110704-110704.doi: 10.1088/1674-1056/acf5d5

所属专题： Featured Column — INSTRUMENTATION AND MEASUREMENT

A combined magnetic field stabilization system for improving the stability of ⁴⁰Ca⁺ optical clock

Mengyan Zeng(曾孟彦)^1,2,3,†, Zixiao Ma(马子晓)^2,3,4,†, Ruming Hu(胡如明)^2,3,4, Baolin Zhang(张宝林)^2,3, Yanmei Hao(郝艳梅)^2,3,4, Huaqing Zhang(张华青)^2,3, Yao Huang(黄垚)^2,3, Hua Guan(管桦)^2,3,5,‡, and Kelin Gao(高克林)^2,3,§

1 Huazhong University of Science and Technology, Wuhan 430074, China;
2 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China;
3 Key Laboratory of Atomic Frequency Standards, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China;
4 University of Chinese Academy of Sciences, Beijing 100049, China;
5 Wuhan Institute of Quantum Technology, Wuhan 430206, China

收稿日期:2023-07-13 修回日期:2023-08-23 接受日期:2023-09-01 出版日期:2023-10-16 发布日期:2023-10-31
通讯作者: Hua Guan, Kelin Gao E-mail:guanhua@apm.ac.cn;klgao@apm.ac.cn
基金资助:
This work is supported by the National Key R&D Program of China (Grant Nos. 2022YFB3904001, 2022YFB3904004, and 2018YFA0307500), the National Natural Science Foundation of China (Grant Nos. 12022414 and 12121004), the CAS Youth Innovation Promotion Association (Grant Nos. Y201963 and Y2022099), the Natural Science Foundation of Hubei Province (Grant No. 2022CFA013), the CAS Project for Young Scientists in Basic Research (Grant No. YSBR-055), and the Interdisciplinary Cultivation Project of the Innovation Academy for Precision Measurement of Science and Technology (Grant No. S21S2201).

A combined magnetic field stabilization system for improving the stability of ⁴⁰Ca⁺ optical clock

1 Huazhong University of Science and Technology, Wuhan 430074, China;
2 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China;
3 Key Laboratory of Atomic Frequency Standards, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China;
4 University of Chinese Academy of Sciences, Beijing 100049, China;
5 Wuhan Institute of Quantum Technology, Wuhan 430206, China

Received:2023-07-13 Revised:2023-08-23 Accepted:2023-09-01 Online:2023-10-16 Published:2023-10-31
Contact: Hua Guan, Kelin Gao E-mail:guanhua@apm.ac.cn;klgao@apm.ac.cn
Supported by:
This work is supported by the National Key R&D Program of China (Grant Nos. 2022YFB3904001, 2022YFB3904004, and 2018YFA0307500), the National Natural Science Foundation of China (Grant Nos. 12022414 and 12121004), the CAS Youth Innovation Promotion Association (Grant Nos. Y201963 and Y2022099), the Natural Science Foundation of Hubei Province (Grant No. 2022CFA013), the CAS Project for Young Scientists in Basic Research (Grant No. YSBR-055), and the Interdisciplinary Cultivation Project of the Innovation Academy for Precision Measurement of Science and Technology (Grant No. S21S2201).

摘要/Abstract

摘要： Future applications of portable ⁴⁰Ca⁺ optical clocks require reliable magnetic field stabilization to improve frequency stability, which can be achieved by implementing an active and passive magnetic field noise suppression system. On the one hand, we have optimized the magnetic shielding performance of the portable optical clock by reducing its apertures and optimizing its geometry; on the other hand, we have introduced an active magnetic field noise suppression system to further suppress the magnetic field noise experienced by the ions. These efforts reduced the ambient magnetic field noise by about 10000 times, significantly reduced the linewidth of the clock transition spectrum, improved the stability of the portable ⁴⁰Ca⁺ optical clock, and created the conditions for using portable optical clocks in non-laboratory magnetic field environments. This active magnetic field suppression scheme has the advantages of simple installation and wide applicability.

关键词: ⁴⁰Ca⁺ optical clock, magnetic field compensation, frequency stability

Abstract: Future applications of portable ⁴⁰Ca⁺ optical clocks require reliable magnetic field stabilization to improve frequency stability, which can be achieved by implementing an active and passive magnetic field noise suppression system. On the one hand, we have optimized the magnetic shielding performance of the portable optical clock by reducing its apertures and optimizing its geometry; on the other hand, we have introduced an active magnetic field noise suppression system to further suppress the magnetic field noise experienced by the ions. These efforts reduced the ambient magnetic field noise by about 10000 times, significantly reduced the linewidth of the clock transition spectrum, improved the stability of the portable ⁴⁰Ca⁺ optical clock, and created the conditions for using portable optical clocks in non-laboratory magnetic field environments. This active magnetic field suppression scheme has the advantages of simple installation and wide applicability.

Key words: ⁴⁰Ca⁺ optical clock, magnetic field compensation, frequency stability

中图分类号: (Magnetic shielding in instruments)

07.55.Nk

95.55.Sh (Auxiliary and recording instruments; clocks and frequency standards)

Mengyan Zeng(曾孟彦), Zixiao Ma(马子晓), Ruming Hu(胡如明), Baolin Zhang(张宝林), Yanmei Hao(郝艳梅), Huaqing Zhang(张华青), Yao Huang(黄垚), Hua Guan(管桦), and Kelin Gao(高克林). A combined magnetic field stabilization system for improving the stability of ⁴⁰Ca⁺ optical clock[J]. 中国物理B, 2023, 32(11): 110704-110704.

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A combined magnetic field stabilization system for improving the stability of ⁴⁰Ca⁺ optical clock

A combined magnetic field stabilization system for improving the stability of ⁴⁰Ca⁺ optical clock

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