English
 
通知: ·171109 交流座谈会    ·171109 禹升华副研究员报告    ·171103 韩文标副研究员报告    ·171031 丁忞博士报告    ·171030 Duffar博士报告   
 
 


  发表论文

  研究小组
  ·2013年5月小组照片
·2014年9月小组照片
  研究方向
  科研项目
  研究成果
  ·发表论文
·获奖
·专利
  最新进展

  文章统计

  2014年 (15)
  2013年 (8)
  2012年 (11)
 

发表论文 您的位置是: 首页 > 科学研究 > 研究成果 > 发表论文 > 正文

 

2017 Time delay and the effect of the finite speed of light in atom gravimeters

发布时间:2017-11-07          来源:           浏览次数:

Yu-Jie Tan, Cheng-Gang Shao,* and Zhong-Kun Hu
MOE Key Laboratory of Fundamental Physical Quantities Measurement, Hubei Key Laboratory of Gravitation and Quantum Physics,
School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
(Received 21 May 2017; published 2 August 2017)


The propagation time delay due to the finite speed of light (FSL) in atom gravimeters introduces a bias in the gravity measurement, as well as that in classical free-falling corner-cube gravimeters, which is usually termed the FSL effect. For a typical atom gravimeter, the FSL time delay is about several nanoseconds, resulting in the FSL effect, a non-negligible bias in the gravity-acceleration measurement. However, a time delay of about several microseconds, achieved by controlling the Raman-pulse timing directly, contributes a negligible effect. This interesting phenomenon motivates us to make clear two questions: first, what are the origins of the FSL effect in atom gravimeters, and second, what is the difference between the two time delays? Our analysis shows that the FSL effect in atom gravimeters is not just a matter of FSL time delay to a great extent but also the change in the effective wave vector; moreover, the FSL time delay can be quantitatively regarded as the same as the pulse time delay since both actually affect the gravity measurement by changing the two interferometer pulse separations.


DOI: 10.1103/PhysRevA.96.023604


上一篇:2017 Experimental Design for Testing Local Lorentz Invariance Violations in Gravity
下一篇:2017 Relativistic effects in atom gravimeters
 
 
 

Copyright (C) 华中科技大学引力实验中心 地址:湖北省武汉市洪山区珞喻路1037号 邮编:430074 技术支持:尚网互联