High-performance coherent population trapping clock based on laser-cooled atoms
文献类型：期刊论文
| 作者 | Liu, Xiaochi3; Ru, Ning3; Duan, Junyi3; Yun, Peter2; Yao, Minghao1,3; Qu, Jifeng3 |
| 刊名 | CHINESE PHYSICS B
 |
| 出版日期 | 2022-03-01 |
| 卷号 | 31期号:4页码:5 |
| 关键词 | coherent population trapping atomic clock cold atoms microwave synthesizer |
| ISSN号 | 1674-1056 |
| DOI | 10.1088/1674-1056/ac2d21 |
| 英文摘要 | We present a coherent population trapping clock system based on laser-cooled 87 Rb atoms. The clock consists of a frequency-stabilized CPT interrogation laser and a cooling laser as well as a compact magneto-optical trap, a high-performance microwave synthesizer, and a signal detection system. The resonance signal in the continuous wave regime exhibits an absorption contrast of similar to 50%. In the Ramsey interrogation method, the linewidth of the central fringe is 31.25 Hz. The system achieves fractional frequency stability of 2.4 x 10(-11)/root tau, which goes down to 1.8 x 10(-13) at 20000 s. The results validate that cold atom interrogation can improve the long-term frequency stability of coherent population trapping clocks and holds the potential for developing compact/miniature cold atoms clocks. |
| WOS关键词 | FREQUENCY STABILITY ; SINGLE-LASER ; RESONANCES ; BEAM |
| 资助项目 | National Natural Science Foundation of China[61975194] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000778727500001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://210.72.145.45/handle/361003/13839]  |
| 专题 | 国家授时中心_守时理论与方法研究室 |
| 通讯作者 | Liu, Xiaochi |
| 作者单位 | 1.China Jiliang Univ, Coll Metrol & Measurement Engn, Hangzhou 310018, Peoples R China 2.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China 3.Natl Inst Metrol, Ctr Adv Measurement Sci, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Xiaochi,Ru, Ning,Duan, Junyi,et al. High-performance coherent population trapping clock based on laser-cooled atoms[J]. CHINESE PHYSICS B,2022,31(4):5. |
| APA | Liu, Xiaochi,Ru, Ning,Duan, Junyi,Yun, Peter,Yao, Minghao,&Qu, Jifeng.(2022).High-performance coherent population trapping clock based on laser-cooled atoms.CHINESE PHYSICS B,31(4),5. |
| MLA | Liu, Xiaochi,et al."High-performance coherent population trapping clock based on laser-cooled atoms".CHINESE PHYSICS B 31.4(2022):5. |
入库方式： OAI收割
来源：国家授时中心
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