Production of ^(87)Rb Bose-Einstein Condensate in an Asymmetric Crossed Optical Dipole Trap

作     者：Zhu Ma Chengyin Han Xunda Jiang Ruihuan Fang Yuxiang Qiu Minhua Zhao Jiahao Huang Bo Lu Chaohong Lee 马翥;韩成银;江迅达;方瑞环;邱宇翔;赵敏华;黄嘉豪;鹿博;李朝红

作者机构：Guangdong Provincial Key Laboratory of Quantum Metrology and Sensing&School of Physics and AstronomySun Yat-Sen University(Zhuhai Campus)State Key Laboratory of Optoelectronic Materials and TechnologiesSun Yat-Sen University(Guangzhou Campus)Zhuhai 519082China State Key Laboratory of Optoelectronic Materials and TechnologiesSun Yat-Sen University(Guangzhou Campus)Guangzhou 510275China 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2021年第38卷第10期

页      面：12-16页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0714[理学-统计学（可授理学、经济学学位）] 0701[理学-数学] 0702[理学-物理学] 

基　　金：Supported by the Key-Area Research and Development Program of Guangdong Province,China (Grant No. 2019B030330001) the National Natural Science Foundation of China (Grant Nos. 12025509 and 11874434) the Science and Technology Program of Guangzhou,China (Grant Nos. 201904020024 and 201804010497) the Natural Science Foundation of Guangdong Province,China(Grant No. 2018A030313988) the Fundamental Research Funds for the Central Universities (Grant No. 2021qntd28) 

主　　题：measurement Einstein Bose 

摘      要：We report the production of ^(87)Rb Bose–Einstein condensate in an asymmetric crossed optical dipole trap(ACODT)without the need of an additional dimple *** our experiment,the ACODT is formed by two laser beams with different radii to achieve efficient capture and rapid evaporation of laser cooled *** to the cooling procedure in a magnetic trap,the atoms are firstly laser cooled and then directly loaded into an ACODT without the pre-evaporative cooling *** order to determine the optimal parameters for evaporation cooling,we optimize the power ratio of the two beams and the evaporation time to maximize the final atom number left in the *** loading about 6×10^(5) laser cooled atoms in the ACODT,we obtain a pure Bose–Einstein condensate with about 1.4×10^(4) atoms after 19 s ***,we demonstrate that the fringe-type noises in optical density distributions can be reduced via principal component analysis,which correspondingly improves the reliability of temperature measurement.