主动光钟研究进展  

Progress of Active Optical Clock

作　　者：潘多 刘天宇 缪健翔 史田田 庄伟[2] 陈景标[1] PAN Duo;LIU Tian-yu;MIAO Jian-xiang;SHI Tian-tian;ZHUANG Wei;CHEN Jing-biao(State Key Laboratory of Advanced Optical Communication Systems and Networks,Peking University,Beijing 100871;National Institute of Metrology,China,Beijing 100013)

机构地区：[1]北京大学区域光纤通信网与新型光通信系统国家重点实验室,北京100871 [2]中国计量科学研究院,北京100013

出　　处：《导航与控制》2022年第5期199-208,共10页Navigation and Control

基　　金：国家自然科学基金(编号:91436210);科技创新2030——“量子通信与量子计算机”重大项目(编号:2021ZD0303200)。

摘　　要：光频原子钟近几十年取得了飞速进展,其频率不稳定度主要受限于本振激光的频率噪声。主动光钟是一种通过光学谐振腔的弱反馈形成多原子相干受激辐射的新型光钟,原理上可以突破光学谐振腔的热噪声极限,从而实现超窄线宽的光钟信号。综述了主动光钟的机理与优越性,并结合国内外的研究成果,介绍了基于光晶格、冷原子、热原子等体系主动光钟的技术特点和研究进展。Optical frequency atomic clocks have made rapid progress in recent decades,and their frequency instability is mainly limited by the frequency noise of local oscillator laser.Active optical clock is a new type of optical clock which forms multi-atom coherent stimulated radiation through weak feedback of optical resonator.In principle,it can break through the thermal noise limit of optical resonator,so as to achieve ultra-narrow linewidth optical clock signal.The mechanism and advantages of active optical clocks are summarized in this paper.Combined with the research results at home and abroad,the technical characteristics and research progress of active optical clocks based on optical lattices,cold atoms and hot atoms are introduced.

关 键 词：主动光钟 受激辐射 坏腔 窄线宽 

分 类 号：O562.3[理学—原子与分子物理]