| Review of chip-scale atomic clocks based on coherent population trapping |
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| 作者姓名： | 汪中 |
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| 作者单位： | School of Electronics Engineering ＆ Computer Science （EECS）, Peking University, Beijing 100871, China |
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| 基金项目： | Project support by the National Natural Science Foundation of China(Grant No.11074012) |
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| 摘 要： | Research on chip-scale atomic clocks （CSACs） based on coherent population trapping （CPT） is reviewed. The back- ground 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 re- liability, 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.
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| 关 键 词： | 原子钟 芯片级 俘获 布居 相干 CPT 信号质量 缓冲气体 |
Review of chip-scale atomic clocks based on coherent population trapping |
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| 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. |
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| Keywords: | chip-scale atomic clock coherent population trapping |
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