The Mode Matching of Hybrid Trap by Frequency Calibration  

作　　者：王中凯 胡栋 牛临潇 张家华 陈徐宗 周小计 

机构地区：[1]School of Electronics Engineering and Computer Science,Peking University

出　　处：《Chinese Physics Letters》2015年第5期78-81,共4页中国物理快报（英文版）

基　　金：Supported by the National Basic Research Program of China under Grant No 2011CB921501;the National Natural Science Foundation of China under Grant Nos 11334001 and 61475007;the Research Fund for the Doctoral Program of Higher Education of China under Grant No 20120001110091

摘　　要：We demonstrate a method to precisely calibrate the relative position between an optical dipole trap and a magnetic quadrupole potential in making a Bose-Einstein condensate via the hybrid trap. We measure the displacement by the dipole oscillation in the gravity direction, where the oscillation frequency can be adjusted through an additional bias magnetic field. One frequency corresponds to the case of the mode matching while two frequencies are not, and the great consistency between theoretical simulation and experimental results indicates its usefulness.We demonstrate a method to precisely calibrate the relative position between an optical dipole trap and a magnetic quadrupole potential in making a Bose-Einstein condensate via the hybrid trap. We measure the displacement by the dipole oscillation in the gravity direction, where the oscillation frequency can be adjusted through an additional bias magnetic field. One frequency corresponds to the case of the mode matching while two frequencies are not, and the great consistency between theoretical simulation and experimental results indicates its usefulness.

分 类 号：O413[理学—理论物理] O469[理学—物理]