基于最先进的光钟直接演示自旋压缩引起的计量增强

作     者：陈景标 于得水 Jingbiao Chen;Deshui Yu

作者机构：State Key Laboratory of Advanced Optical CommunicationSystem and NetworkSchool of ElectronicsPeking UniversityBeijing 100871China National Time Service CenterChinese Academy of SciencesXi’an 710600China Key Laboratory of Time Reference and ApplicationsChinese Academy of SciencesXi’an 710600China 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2024年第69卷第10期

页      面：1359-1361页

核心收录：

学科分类：08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 

主　　题：optical 光钟 自旋压缩 

摘      要：Benefiting from the recent progress in precise engineering of quantum states and sub-10 mHz linewidth lasers,the stability and accuracy of optical atomic clocks have reached and even exceeded the 10
18 level,surpassing their microwave counterparts by over two orders of magnitude[1,2].These advances lead to an anticipated redefinition of the international system of units(SI)second in terms of an optical reference transition as early as 2026.