Extracting the differential phase in dual atom interferometers by modulating magnetic fields

OPTICS COMMUNICATIONS

卷:375

Article

Wang, Yu-Ping^1,2,3  Zhong, Jia-Qi^1,2  Chen, Xi^1,2  Li, Run-Bing^1,2  Li, Da-Wei^1,2,3  Zhu, Lei^1,2,3  Song, Hong-Wei^1,2,3  Wang, Jin^1,2  Zhan, Ming-Sheng^1,2 

[1] Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, POB 71010, Wuhan 430071, Hubei, Peoples R China

[2] Chinese Acad Sci, Ctr Cold Atom Phys, Wuhan 430071, Hubei, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

关键词: Atom interferometer;    Data analysis;    Differential phase measurement;    Gravity gradiometer;   

DOI  :  10.1016/j.optcom.2016.04.069

来源: Elsevier

【 摘 要 】

We present a new scheme for measuring the differential phase in dual atom interferometers. The magnetic field is modulated in one interferometer, and the differential phase can be extracted without measuring the amplitude of the magnetic field by combining the ellipse and linear fitting methods. The gravity gradient measurements are discussed based on dual atom interferometers. Numerical simulation shows that the systematic error of the differential phase measurement is largely decreased when the duration of the magnetic field is symmetrically modulated. This combined fitting scheme has a high accuracy for measuring an arbitrary differential phase in dual atom interferometers. (C) 2016 Elsevier B.V. All rights reserved.

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