2024/05/31 by Jinting Li, Xi Chen, Li, Jinting +45 · 1 citation
Physics and Astronomy · #Advanced Frequency and Time Standards #Applied Physics (physics.app-ph) #Atomic Physics (physics.atom-ph) #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Popular Physics (physics.pop-ph) #Quantum Physics (quant-ph)
paper · pdf · doi:10.48550/arxiv.2405.20659
openalex publication_date 2024/05/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.