空间科学学报2025，Vol.45Issue(1)：29-55,27.DOI:10.11728/cjss2025.01.2024-0174
微重力环境下超冷原子物理研究
Research on Ultracold Atom Physics in Microgravity
摘要
Abstract
The China Space Station(CSS)provides an ideal experimental platform for researching and applying ultracold atoms in microgravity.On 31 October 2022,the Cold Atom Physics Research Rack(CAPR)was launched to the CSS together with the Mengtian lab module,designed by the Shanghai In-stitute of Optics and Fine Mechanics of the Chinese Academy of Sciences(SIOM)and Peking University.The main goal of the CAPR is to build an ultracold atomic physics experiment platform using 87Rb Bose Einstein Condensate(BEC)in the CSS.In microgravity,ultracold atoms can be cooled to picokelvin(pK)via Two-Stage Crossed Beams Cooling(TSCBC),which is three orders of magnitude lower than on earth and can inspire the novel physical phenomena.The preparation of the BEC and the deep cooling are introduced in this paper,as well as a series of advancements in ultracold atoms in microgravity.The CAPR is an experimental platform that relies on evaporative cooling in a crossed optical dipole trap.Furthermore,the CAPR's design scheme and ground verification experiment are also introduced.So far,the CAPR has continued to conduct research on ultracold atoms in microgravity,with more than two years of uninterrupted operation in orbit.Up to now,preliminary experimental results have been achieved,realizing the primary purpose of the CAPR.关键词
玻色-爱因斯坦凝聚/超冷原子/中国空间站/微重力环境Key words
Bose-Einstein condensate/Ultracold atom/China Space Station(CSS)/Microgravity分类
物理学引用本文复制引用
李琳,汪斌,周小计,陈徐宗,李唐,刘亮..微重力环境下超冷原子物理研究[J].空间科学学报,2025,45(1):29-55,27.基金项目
中国载人航天工程空间应用系统项目资助 （）
