基于Ramsey干涉的小型化冷原子微波钟研究进展  

Research Progress of Miniaturized Cold Atom Microwave Clocks Based on Ramsey Interrogation

作　　者：张炯阳 肖玉华[1] 王骥[1] 李慧 高望远 张文玺 陈江[1] 刘志栋[1] ZHANG Jiongyang;XIAO Yuhua;WANG Ji;LI Hui;GAO Wangyuan;ZHANG Wenxi;CHEN Jiang;LIU Zhidong(Science and Technology on Vacuum Technology and Physics Laboratory Lanzhou Institute of Physics,Lanzhou 730000,China;State-Run Luoyang Dan City Radio Power Plant,Luoyang 471000,Henan,China)

机构地区：[1]兰州空间技术物理研究所真空技术与物理重点实验室,兰州730000 [2]国营洛阳丹城无线电厂,河南洛阳471000

出　　处：《真空与低温》2024年第5期484-495,共12页Vacuum and Cryogenics

基　　金：国家自然科学基金项目(U2341247);中国航天科技集团有限公司钱学森青年基金;甘肃省领军人才计划资助项目(2023-LJRCⅡ-366)。

摘　　要：基于Ramsey干涉的冷原子钟已被证实具有很高的稳定度和准确度。经过近30年的发展,冷原子钟技术水平不断提高,运行可靠性不断提升,并逐步在便携式和可移动时频系统上得到应用,冷原子钟的小型化已成为该领域的研究热点。阐述了基于Ramsey干涉的冷原子微波钟的工作原理及运行过程,分析了冷原子钟小型化的关键技术,梳理了目前小型化冷原子钟的研究进展,表明了基于腔内冷原子制备的原位干涉技术是实现冷原子钟小型化的有效途径,由此发展的冷原子钟兼具高性能、高可靠、高集成化等优势。The cold atom clock based on Ramsey interrogation has been proved to have high stability and accuracy.Af-ter nearly 30 years of development,the technology maturity and the reliability of the cold atom clocks are improved,and it has been gradually applied in portable time-frequency systems.The miniaturization of cold atom clock thus becomes a re-search hotspot in this field.The working principle and operation process of cold atom microwave clock based on Ramsey in-terrogation are expounded.The key technologies and the research status of miniaturization of cold atom clock are analyzed and reviewed,respectively.It is shown that the in-situ interrogation technology based on the preparation of cold atoms in the cavity is an effective way to realize the miniaturization of cold atom clock,which will make the cold atom clock has the ad-vantages of high performance,high reliability and high integration.

关 键 词：冷原子钟 Ramsey干涉 频率测量 小型化 

分 类 号：TH714.14[机械工程—测试计量技术及仪器]