Magnetic-field-sensitive multi-wave interference  

作　　者：Wenhua Yan Xudong Ren Wenjie Xu Zhongkun Hu Minkang Zhou 

机构地区：[1]MOE Key Laboratory of Fundamental Physical Quantities Measurements,Hubei Key Laboratory of Gravitation and Quantum Physics,PGMF and School of Physics,Huazhong University of Science and Technology,Wuhan 430074,China [2]Wuhan Institute of Quantum Technology,Wuhan 430206,China

出　　处：《Frontiers of physics》2023年第5期201-207,共7页物理学前沿（英文版）

基　　金：supported by the National Key Research and Development Program of China(Grant No.2020YFC2200200);the National Natural Science Foundation of China(Grants Nos.12004128,12104174,and 12274163);Open Fund of Wuhan,Gravitation and Solid Earth Tides,National Observation and Research Station(Grants Nos.WHYWZ202211 and WHYWZ202104).

摘　　要：We report an experimental study of magnetic-field-sensitive multi-wave interference,realized in a three-wave RF-atom system.In the F=1 hyperfine level of the ^(87)Rb 5^(2)S_(1/2) ground state,Ramsey fringes were observed via the spin-selective Raman detection.A decrease in the fringe contrast was observed with increasing free evolution time.The maximum evolution time for observable fringe contrasts was investigated at different atom temperatures,under free-falling and trapped conditions.As the main interest of the Ramsey method,the improvement in magnetic field resolution is observed with an increase of evolution time T up to 3 ms and with the measurement resolution reaching 0.85 nT.This study paves the way for precision magnetic field measurements based on cold atoms.

关 键 词：atom interferometer MAGNETOMETER cold atom device multi-wave interference 

分 类 号：O4[理学—物理]