摘要
In this article,taking advantage of the special magnetic shieldings and the optimal coil design of a transportable Rb atomic fountain clock,the intensity distribution in space and the fluctuations with time of the quantization magnetic field in the Ramsey region were measured using the atomic magneton-sensitive transition method.In an approximately 310 mm long Ramsey region,a peak-to-peak magnetic field intensity of a 0.74 n T deviation in space and a 0.06 n T fluctuation with time were obtained.These results correspond to a second-order Zeeman frequency shift of approximately(2095.5±5.1)×10^(-17).This is an essential step in advancing the total frequency uncertainty of the fountain clock to the order of 10^(-17).
作者
程鹤楠
邓思敏达
张镇
项静峰
吉经纬
任伟
李唐
屈求智
刘亮
吕德胜
Henan Cheng;Siminda Deng;Zhen Zhang;Jingfeng Xiang;Jingwei Ji;Wei Ren;Tang Li;Qiuzhi Qu;Liang Liu;Desheng Lu(Key Laboratory of Quantum Optics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;College of Materials Science and Opto-Electronic Technology,University of Chinese Academy of Sciences,Beijing 100049,China)
基金
supported by the National Natural Science Foundation of China(No.12004401)
Ministry of Science and Technology of China(No.2013YQ09094304)。