The Mode Matching of Hybrid Trap by Frequency Calibration

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 freq...

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Bibliographic Details
Published inChinese physics letters Vol. 32; no. 5; pp. 78 - 81
Main Author 王中凯 胡栋 牛临潇 张家华 陈徐宗 周小计
Format Journal Article
LanguageEnglish
Published 01.05.2015
Subjects
Bose-Einstein condensates
Calibration
Consistency
Dipoles
Magnetic fields
Matching
Quadrupoles
Simulation
偶极振荡
模式匹配
混合
爱因斯坦凝聚
相对位置
重力方向
陷阱
频率校准
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ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/32/5/054208

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Summary: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.
Bibliography:WANG Zhong-Kai,HU Dong, NIU Lin-Xiao, ZHANG Jia-Hua, CHEN Xu-Zong,ZHOU Xiao-Ji（ School of Electronics Engineering and Computer Science, Peking University, Beijing 100871）
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.
11-1959/O4
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ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/32/5/054208