Suppression of Coriolis error in weak equivalence principle test using ^85Rb-^87Rb dual-species atom interferometer  

作　　者：Wei-Tao Duan Chuan He Si-Tong Yan Yu-Hang Ji Lin Zhou Xi Chen Jin Wang Ming-Sheng Zhan 段维涛;何川;闫思彤;冀宇航;周林;陈曦;王谨;詹明生(State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences-Wuhan National Laboratory for Optoelectronics,Wuhan 430071,China;School of Physics,University of Chinese Academy of Sciences,Beijing 100049,China;Center for Cold Atoms Physics,Chinese Academy of Sciences,Wuhan 430071,China)

机构地区：[1]State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences-Wuhan National Laboratory for Optoelectronics,Wuhan 430071,China [2]School of Physics,University of Chinese Academy of Sciences,Beijing 100049,China [3]Center for Cold Atoms Physics,Chinese Academy of Sciences,Wuhan 430071,China

出　　处：《Chinese Physics B》2020年第7期77-84,共8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.2016YFA0302002);the National Natural Science Foundation of China(Grant Nos.91736311 and 11574354);Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB21010100);the Youth Innovation Promotion Association of the Chinese Academy of Sciences(Grant No.2016300).

摘　　要：Coriolis effect is an important error source in the weak equivalence principle(WEP)test using atom interferometer.In this paper,the problem of Coriolis error in WEP test is studied theoretically and experimentally.In theoretical simulation,the Coriolis effect is analyzed by establishing an error model.The measurement errors of Eotvos coefficient(η)in WEP test related to experimental parameters,such as horizontal-velocity difference and horizontal-position difference of atomic clouds,horizontal-position difference of detectors,and rotation compensation of Raman laser’s mirror are calculated.In experimental investigation,the position difference between^85Rb and^87Rb atomic clouds is reduced to 0.1 mm by optimizing the experimental parameters,an alternating detection method is used to suppress the error caused by detection position difference,thus the Coriolis error related to the atomic clouds and detectors is reduced to 1.1 × 10^-9.This Coriolis error is further corrected by com pensating the rotation of Raman laser's mirror,and the total uncertainty o f rj measurement related to the Coriolis effect is reduced as δη=4.4 × 10^-11.

关 键 词：atom interferometer weak equivalence principle test Coriolis effect 

分 类 号：TH744.3[机械工程—光学工程]