Production of Rubidium Bose-Einstein Condensate in an Optically Plugged Magnetic Quadrupole Trap

作     者：张东方 高天佑 孔令冉 李凯 江开军 

作者机构：State Key Laboratory of Magnetic Resonance and Atomic and Molecular PhysicsWuhan Institute of Physics and MathematicsChinese Academy of Sciences University of Chinese Academy of Sciences Center for Cold Atom PhysicsChinese Academy of Sciences 

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

年 卷 期：2016年第33卷第7期

页      面：120-123页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 11434015,91336106 and 11004224 the National Basic Research Program of China under Grant No 2011CB921601 

主　　题：of is BEC in Production of Rubidium Bose-Einstein Condensate in an Optically Plugged Magnetic Quadrupole Trap 

摘      要：We experimentally produce the rubidium Bose-Einstein condensate in an optically plugged magnetic quadrupole trap. A far blue-detuned focused laser beam with a wavelength of 532nm is plugged in the center of the magnetic quadrupole trap to increase the number of trapped atoms and to suppress the heating. An rf evaporative cooling in the magneto-optical hybrid trap is applied to decrease the atom temperature into degeneracy. The atom number of the condensate is 1.2（0.4）× 10^5 and the temperature is below lOOnK. We also study characteristic behaviors of the condensate, such as phase space density, condensate fraction and anisotropic expansion.