冷原子量子真空计量技术综述  

Review of cold atom quantum-based vacuum metrology

作　　者：付政伟 杨水旺 苏一鸣 张琦 FU Zhengwei;YANG Shuiwang;SU Yiming;ZHANG Qi(Beijing Zhenxing Institute of Metrology and Measurement,Beijing 100074,China)

机构地区：[1]北京振兴计量测试研究所,北京100074

出　　处：《工业计量》2024年第4期101-106,共6页Industrial Metrology

摘　　要：激光冷却和囚禁原子技术的发展,使得基于冷原子测量真空度的计量方法的测量范围可达10^(-4)~10^(-9)Pa,乃至更低。此外,该方法中仅仅只有冷原子本身及气体的碰撞截面两因素会影响冷原子的损失率。因此,基于冷原子的量子真空计量技术有望成为真空计量的原级标准,进而发展为新一代的真空计量技术。文章介绍了激光冷却和囚禁原子这两项关键技术的基本概念及其工作原理;概述了冷原子量子真空计量技术的基本原理,通过搜集、整理有关该技术的国内外大量文献资料,对近年来国内外冷原子量子真空计量技术的发展动态与趋势给出较为全面的评述;最后展望了冷原子量子真空计量技术的发展趋势。With the development of laser cooling and trapping atom technology,the pressure measurement range of cold atom quantum-based vacuum metrology(CAVM)can reach or even lower 10^(-4)~10^(-10)Pa.In addition,the loss rate of cold atoms in this method is only related to the collision cross section of cold atoms and gases,so this technology is expected to develop into a new generation of vacuum metering technology.In this paper,the basic concept,structure and working principle of magneto-optical traps for laser cooling atoms and trapping atoms are introduced;Then,the basic principle of CAVM is introduced.Through collecting and sorting out a large number of domestic and foreign literature about this technology,the development trends and trends of CAVM at home and abroad in recent years are comprehensively reviewed;Finally,the development trend of CAVM is prospected.

关 键 词：冷原子 真空计量 量子计量技术 碰撞损失率 

分 类 号：TB771[一般工业技术—真空技术]