Calibration of atomic trajectories in a large-area dual-atom-interferometer gyroscope

Zhan-Wei Yao, Si-Bin Lu, Run-Bing Li, Jun Luo, Jin Wang, and Ming-Sheng Zhan
Phys. Rev. A 97, 013620 – Published 17 January 2018

Abstract

We propose and demonstrate a method for calibrating atomic trajectories in a large-area dual-atom-interferometer gyroscope. The atom trajectories are monitored by modulating and delaying the Raman transition, and they are precisely calibrated by controlling the laser orientation and the bias magnetic field. To improve the immunity to the gravity effect and the common phase noise, the symmetry and the overlap of two large-area atomic interference loops are optimized by calibrating the atomic trajectories and by aligning the Raman-laser orientations. The dual-atom-interferometer gyroscope is applied in the measurement of the Earth's rotation. The sensitivity is 1.2×106 rad s1 Hz1/2, and the long-term stability is 6.2×108 rad/s at 2000 s.

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  • Received 28 September 2017
  • Revised 11 December 2017

DOI:https://doi.org/10.1103/PhysRevA.97.013620

©2018 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Zhan-Wei Yao1,2, Si-Bin Lu1,3, Run-Bing Li1,2,*, Jun Luo1,2, Jin Wang1,2,†, and Ming-Sheng Zhan1,2,‡

  • 1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
  • 2Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071, China
  • 3School of physics, University of Chinese Academy of Sciences, Beijing 100049, China

  • *rbli@wipm.ac.cn
  • wangjin@wipm.ac.cn
  • mszhan@wipm.ac.cn

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Issue

Vol. 97, Iss. 1 — January 2018

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