Realization of cold atom gyroscope in space
Abstract
High-precision gyroscopes in space are essential for fundamental physics research and navigation. Due to its potential high precision, the cold atom gyroscope is expected to be the next generation of gyroscopes in space. Here, we report the first realization of a cold atom gyroscope, which was demonstrated by the atom interferometer installed in the China Space Station (CSS) as a payload. By compensating for CSS's high dynamic rotation rate using a built-in piezoelectric mirror, spatial interference fringes in the interferometer are successfully obtained. Then, the optimized ratio of the Raman laser's angles is derived, the coefficients of the piezoelectric mirror are self-calibrated in orbit, and various systemic effects are corrected. We achieve a rotation measurement resolution of 50*10^-6 rad/s for a single shot and 17*10^-6 rad/s for an average number of 32. The measured rotation is (-1142+/-29)*10^-6 rad/s and is compatible with that recorded by the classical gyroscope of the CSS. This study paves the way for developing high-precision cold atom gyroscopes in space.
Keywords
Cite
@article{arxiv.2405.20659,
title = {Realization of cold atom gyroscope in space},
author = {Jinting Li and Xi Chen and Danfang Zhang and Wenzhang Wang and Yang Zhou and Meng He and Jie Fang and Lin Zhou and Chuan He and Junjie Jiang and Huanyao Sun and Qunfeng Chen and Lei Qin and Xiao Li and Yibo Wang and Xiaowei Zhang and Jiaqi Zhong and Runbing Li and Meizhen An and Long Zhang and Shuquan Wang and Zongfeng Li and Jin Wang and Mingsheng Zhan},
journal= {arXiv preprint arXiv:2405.20659},
year = {2024}
}
Comments
14 pages, 3 figures