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

doi:10.1088/1674-1056/aba9c9

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.

Keywords: atom interferometer optical dipole traps revival echo sequence

Received: 22 May 2020
Revised: 10 July 2020
Accepted manuscript online: 28 July 2020

PACS:	37.25.+k	(Atom interferometry techniques)
	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)

Fund: 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).

Corresponding Authors: ^†Corresponding author. E-mail: wangliyong@sdu.edu.cn

Cite this article:

Li-Yong Wang(王立勇), Xiao Li(李潇), Kun-Peng Wang(王坤鹏), Yin-Xue Zhao(赵吟雪), Ke Di(邸克), Jia-Jia Du(杜佳佳), and Jian-Gong Hu(胡建功) Interference properties of a trapped atom interferometer in two asymmetric optical dipole traps 2020 Chin. Phys. B 29 123701

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