Rapid extraction of the phase shift of the cold-atom interferometer via phase demodulation*
Cheng Binga), Wang Zhao-Yinga), Xu Ao-Penga), Wang Qi-Yua), Lin Qianga),b)
       
Comparison of the results of differential phase shift between 0.5 A and 1.0 A bias fields. Line: scanning T 2 phase demodulation; dash-dot line: calculated quadratic Zeeman shift; square: fixed T with fringe fitting measurement.