中国物理B ›› 2020, Vol. 29 ›› Issue (12): 123701-.doi: 10.1088/1674-1056/aba9c9

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

  

  • 收稿日期:2020-05-22 修回日期:2020-07-10 接受日期:2020-07-28 出版日期:2020-12-01 发布日期:2020-11-13

Interference properties of a trapped atom interferometer in two asymmetric optical dipole traps

Li-Yong Wang(王立勇)1,2,3,†, Xiao Li(李潇)3,4, Kun-Peng Wang(王坤鹏)3,4, Yin-Xue Zhao(赵吟雪)5, Ke Di(邸克)6, Jia-Jia Du(杜佳佳)6, and Jian-Gong Hu(胡建功)7   

  1. 1 Center for Optics Research and Engineering (CORE), Shandong University, Qingdao 266237, China; 2 School of Information Science and Engineering, Shandong University, Qingdao 266237, China; 3 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, APM, Chinese Academy of Sciences, Wuhan 430071, China; 4 Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071, China; 5 Wuhan Social Work Polytechnic, Wuhan 430079, China; 6 Chongqing University of Post and Telecommunications, Chongqing 400065, China; 7 School of Information Engineering, Nanchang University, Nanchang 330031, China
  • Received:2020-05-22 Revised:2020-07-10 Accepted:2020-07-28 Online:2020-12-01 Published:2020-11-13
  • Contact: Corresponding author. E-mail: wangliyong@sdu.edu.cn
  • Supported by:
    Project supported by the Postdoctoral Applied Research Program of Qingdao (Grant No. 62350079311135), the National Natural Science Foundation of China (Grant Nos. 11704053 and 11947057), and the Science and Technology Project Affiliated to the Education Department of Chongqing Municipality (Grant No. KJQN201800629).

Abstract: We investigate interference properties of a trapped atom interferometer where two symmetric optical dipole traps (ODTs) act as the atomic wave-packets splitter and combiner with internal state labelling. After the preparation of initial superposition states, the atomic wave-packet is adiabatically split and moves into two spatially separate asymmetric ODTs. The atomic wave-packets in two ODTs are then adiabatically recombined after a duration of free evolving in traps, completing the interference cycle of this atom interferometer. We show that the interferogram exhibits a series of periodic revivals in interference visibility. Furthermore, the revival period decreases as the asymmetry of two dipole potentials increases. By introducing an echo sequence to the interferometer, we show that while the echo effect is not influenced by the asymmetry of the two ODTs, the onset of periodic revivals changes by the echo sequence. Our study provides an effective method to cancel or compensate the phase shift caused by position and time correlated force.

Key words: atom interferometer, optical dipole traps, revival, echo sequence

中图分类号:  (Atom interferometry techniques)

  • 37.25.+k
34.80.Pa (Coherence and correlation) 42.50.Gy (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption) 42.60.-v (Laser optical systems: design and operation)