中国物理B ›› 2014, Vol. 23 ›› Issue (3): 30601-030601.doi: 10.1088/1674-1056/23/3/030601

• REVIEW • 上一篇    下一篇

Review of chip-scale atomic clocks based on coherent population trapping

汪中   

  1. School of Electronics Engineering & Computer Science (EECS), Peking University, Beijing 100871, China
  • 收稿日期:2013-10-11 出版日期:2014-03-15 发布日期:2014-03-15
  • 基金资助:
    Project support by the National Natural Science Foundation of China (Grant No. 11074012).

Review of chip-scale atomic clocks based on coherent population trapping

Wang Zhong (汪中)   

  1. School of Electronics Engineering & Computer Science (EECS), Peking University, Beijing 100871, China
  • Received:2013-10-11 Online:2014-03-15 Published:2014-03-15
  • Contact: Wang Zhong E-mail:zw@pku.edu.cn
  • Supported by:
    Project support by the National Natural Science Foundation of China (Grant No. 11074012).

摘要: Research on chip-scale atomic clocks (CSACs) based on coherent population trapping (CPT) is reviewed. The background and the inspiration for the research are described, including the important schemes proposed to improve the CPT signal quality, the selection of atoms and buffer gases, and the development of micro-cell fabrication. With regard to the reliability,stability, and service life of the CSACs, the research regarding the sensitivity of the CPT resonance to temperature and laser power changes is also reviewed, as well as the CPT resonance’s collision and light of frequency shifts. The first generation CSACs have already been developed but its characters are still far from our expectations. Our conclusion is that miniaturization and power reduction are the most important aspects calling for further research.

关键词: chip-scale atomic clock, coherent population trapping

Abstract: Research on chip-scale atomic clocks (CSACs) based on coherent population trapping (CPT) is reviewed. The background and the inspiration for the research are described, including the important schemes proposed to improve the CPT signal quality, the selection of atoms and buffer gases, and the development of micro-cell fabrication. With regard to the reliability,stability, and service life of the CSACs, the research regarding the sensitivity of the CPT resonance to temperature and laser power changes is also reviewed, as well as the CPT resonance’s collision and light of frequency shifts. The first generation CSACs have already been developed but its characters are still far from our expectations. Our conclusion is that miniaturization and power reduction are the most important aspects calling for further research.

Key words: chip-scale atomic clock, coherent population trapping

中图分类号:  (Time and frequency)

  • 06.30.Ft
06.20.fb (Standards and calibration) 32.80.Qk (Coherent control of atomic interactions with photons) 07.10.Cm (Micromechanical devices and systems)