Cavity enhanced measurement of trap frequency in an optical dipole trap  

作　　者：Peng-Fei Yang Hai He Zhi-Hui Wang Xing Han Gang Li Peng-Fei Zhang Tian-Cai Zhang 杨鹏飞;贺海;王志辉;韩星;李刚;张鹏飞;张天才(State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics,Shanxi University;Collaborative Innovation Center of Extreme Optics, Shanxi University)

机构地区：[1]State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics,Shanxi University [2]Collaborative Innovation Center of Extreme Optics, Shanxi University

出　　处：《Chinese Physics B》2019年第4期165-169,共5页中国物理B（英文版）

基　　金：Project supported by the National Key Research and Development Program of China(Grant No.2017YFA0304502);the National Natural Science Foundation of China(Grant Nos.11634008,11674203,11574187,and 61227902);the Fund for Shanxi "1331 Project" Key Subjects Construction

摘　　要：We demonstrate a direct, fluorescence-free measurement of the oscillation frequency of cold atoms in an optical dipole trap based on a high-finesse optical cavity strongly coupled to atoms. The parametric heating spectra of the trapped atoms are obtained by recording the transmitted photons from the cavity with the trap depth is modulated by different frequency.Moreover, in our method the oscillation can be observed directly in the time scale. Being compared to the conventional fluorescence-dependent method, our approach avoids uncertainties associated with the illuminating light and auxiliary imaging optics. This method has the potential application of determining the motion of atoms with stored quantum bits or degenerate gases without destroying them.We demonstrate a direct, fluorescence-free measurement of the oscillation frequency of cold atoms in an optical dipole trap based on a high-finesse optical cavity strongly coupled to atoms. The parametric heating spectra of the trapped atoms are obtained by recording the transmitted photons from the cavity with the trap depth is modulated by different frequency.Moreover, in our method the oscillation can be observed directly in the time scale. Being compared to the conventional fluorescence-dependent method, our approach avoids uncertainties associated with the illuminating light and auxiliary imaging optics. This method has the potential application of determining the motion of atoms with stored quantum bits or degenerate gases without destroying them.

关 键 词：CAVITY QED OSCILLATION FREQUENCY 

分 类 号：O4[理学—物理]