Atom-Light Hybrid Quantum Gyroscope

Yuan Wu, Jinxian Guo, Xiaotian Feng, L.Q. Chen, Chun-Hua Yuan, and Weiping Zhang

Phys. Rev. Applied 14, 064023 – Published 8 December 2020

Abstract

An atom-light hybrid quantum gyroscope (ALHQG) is proposed due to its high rotation sensitivity. It consists of an optical Sagnac loop to couple rotation rate and an atomic ensemble as quantum beam splitter (recombiner) [QBS(C)] based on atomic Raman-amplification process to realize the splitting and recombination of the optical wave and the atomic spin wave. The rotation sensitivity can be enhanced by the quantum correlation between Sagnac loop and QBS(C). The optimal working condition is investigated to achieve the best sensitivity. The numerical results show that the rotation sensitivity can beat the standard quantum limit (SQL) in ideal condition. Even in the presence of the attenuation under practical condition, the best sensitivity of the ALHQG can still beat the SQL and is better than that of a classical fiber optic gyroscope. Such an ALHQG could be practically applied for modern inertial navigation system.

Received 2 May 2020
Revised 15 October 2020
Accepted 6 November 2020

DOI:https://doi.org/10.1103/PhysRevApplied.14.064023

Physics Subject Headings (PhySH)

Hybrid quantum systems Quantum fluctuations & noise Quantum measurements Quantum metrology Quantum sensing Stimulated Raman scattering

Atomic ensemble

Optical interferometry

Quantum Information, Science & TechnologyAtomic, Molecular & Optical

Authors & Affiliations

Yuan Wu¹, Jinxian Guo^2,3, Xiaotian Feng¹, L.Q. Chen ^1,3,*, Chun-Hua Yuan ^1,†, and Weiping Zhang^2,3,4

¹State Key Laboratory of Precision Spectroscopy, Quantum Institute of Atom and Light, Department of Physics, East China Normal University, Shanghai 200062, People’s Republic of China
²School of Physics and Astronomy, and Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China
³Shanghai Research Center for Quantum Sciences, Shanghai 201315, People’s Republic of China
⁴Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, People’s Republic of China

^*lqchen@phy.ecnu.edu.cn
^†chyuan@phy.ecnu.edu.cn

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Vol. 14, Iss. 6 — December 2020

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Physical Review Applied