Description
Abstract: The atom-interferometer gyroscope has been proven to be a promising tool for high-precision rotation measurements, and it will have important applications in fields of fundamental physics, geophysics, and inertia navigation. Here, we present the recent progress of our atom-interferometer gyroscope. First, with a compact atom-interferometer gyroscope, we demonstrated the rotation sensitive property in a dynamic rotating frame [1]. Then, to improve the sensitivity, we applied three pairs of separated Raman beams to build dual large-area interference loops, and developed a self-calibrated method of atomic trajectories in dual atomic interference loops to suppress the common noise [2]. Finally, we realize a portable, large-area dual-atom-interferometer gyroscope with a long-term stability of 9.5×10$^{-10}$ rad/s [3]. The device is compact and portable, and it was transported to Beijing from Wuhan over 1200 km. Benefit from the compact laser system and physical chamber, our atom-interferometer gyroscope reveals a high stability and a robust property even after a long-distance transport, and it demonstrates an excellent performance in two locations.
References:
[1] Z. W. Yao, S. B. Lu, R. B. Li, K. Wang, L. Cao, J. Wang, and M. S. Zhan, Continuous dynamic rotation measurements using a compact cold atom gyroscope, Chin. Phys. Lett. 33, 083701 (2016)
[2] Z. W. Yao, S. B. Lu, R. B. Li, J. Luo, J. Wang, and M. S. Zhan, Calibration of atomic trajectories in a large-area dual-atom-interferometer gyroscope, Physical Review A, 97, 013620 (2018)
[3] Z. W. Yao, H. H. Chen, S. B. Lu, R. B. Li, Z. X. Lu, X. L. Chen, G. H. Yu, M. Jiang, C. Sun, W. T. Ni, J. Wang, and M. S. Zhan, Self-alignment of a large-area dual-atom- interferometer gyroscope using parameter-decoupled phase-seeking calibrations. Phys. Rev. A 103, 023319 (2021).
| Presenter name | Zhanwei Yao |
|---|---|
| How will you attend ICAP-27? | I am planning on virtual registration for online attendance |
