Possibility of an Optically-Trapped Bose-Einstein Condensation  

作　　者：YIN Jian-ping Yifu Zhu WANG Yu-zhu Min Xiao 印建平;Yifu Zhu;王育竹;Min Xiao(Department of Physics,Suzhou University,Suzhou,215006;Department of Physics,Florida International University Miami,Florida 33199,USA;Laboratory for Quantum Optics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800;Department of Physics,University of Arkansas,Fayetteville,AR 72701,USA)

机构地区：[1]Department of Physics,Suzhou University,Suzhou,215006 [2]Department of Physics,Florida International University Miami,Florida 33199,USA [3]Laboratory for Quantum Optics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800 [4]Department of Physics,University of Arkansas,Fayetteville,AR 72701,USA

出　　处：《Chinese Physics Letters》1999年第5期350-352,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No.69878019;the Natural Science Foundation of Jiangsu Province under Grant No.7715.

摘　　要：We propose a novel gravito-optical atom trap composed of a blue-detuned,conical dark-hollow-beam propagating upward and the gravity field.When cold atoms are loaded into the conical dark-hollow-beam from a magnetic-optical trap and bounce inside the hollow beam,they experience an efficient hollow-beam induced Sisyphus cooling and repurnping-beam induced geometric cooling.Our investigation shows that an ultracold and dense 87Rb atomic sample with an equilibrium 3D temperature of about 1μK can be obtained and the appearance of an optically-trapped Bose-Einstein condensation may be possible in this pure optical trap.

关 键 词：field. EINSTEIN BEAM 

分 类 号：O56[理学—原子与分子物理]