Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Sensors and Actuators A Physical

Magnetic field gradient in K–Rb–21Ne comagnetometer: Measurement, decoupling and suppression

Zhihong Wu, Haoying Pang, Zhuo Wang, Wenfeng Fan, Feng Liu, Hongyu Pei, Wei Quan

Published Sep 25, 2023• 5 citations
Publisher
DOI
10.1016/j.sna.2023.114687

Related papers

Suppression of magnetic field gradient of atomic spin polarization based on systematic parameter analysis in K-Rb-21Ne comagnetometer

Senhua Lei, Kai Zhang, Zhihong Wu +4 more

Sensors and Actuators A Physical•Apr 21, 2026•1 citation

A High Sensitive Atomic Co-magnetometer for Rotation Rate Measurement Based on K-Rb-21Ne

Yao Chen, Sheng Zou, Wei Quan +3 more

Bulletin of the American Physical Society•May 27, 2016•0 citations

Suppression of Low-Frequency Magnetic Drift Based on Magnetic Field Sensitivity in K-Rb-21Ne Atomic Spin Comagnetometer

Ye Liu, Wenfeng Fan, Yang Fu +3 more

A spin-exchange relaxation-free comagnetometer is a promising high-precision gyroscope as its inertial measurement sensitivity can rival that of existing technologies. The magnetic field error is one of the main factors that limits the long-term stability of the comagnetometer. The steady-state response and frequency response models of a K-Rb-21Ne comagnetometer are modified by considering the spin-exchange rate between the electron spins and the nuclear spins. The modified models are used to redefine the bias magnetic sensitivity of the K-Rb-21Ne comagnetometer and the suppression method of low-frequency magnetic field error is proposed. We demonstrate the magnetic drift suppression method proposed in the article by optimizing the cell temperature and pump laser power density. This study is helpful to improve the rotation measurement performance of the K-Rb-21Ne comagnetometer.

IEEE Transactions on Instrumentation and Measurement•Jan 1, 2022•19 citations

In-shield pre-operational calibration and error decoupling of gradient compensation coils in atomic comagnetometers via tensor eigen-decomposition

Senhua Lei, Xusheng Lei, Hao Xia +1 more

Measurement•Sep 10, 2026•0 citations

A Rb-magnetometer for a wide range and high sensitivity

Werner D. Farr, Ernst Wilhelm Otten

Applied Physics A•May 1, 1974•26 citations

Rotation sensing decoupling of a dual-axis K-Rb-21Ne atomic comagnetometer

Lihong Duan, Wei Quan, Yao Chen +5 more

A dual-axis atomic comagnetometer can sense the angular rotation of two measurement axes simultaneously and independently. However, there is a cross-talk coupling effect between the two axes because of the residual magnetic field and the light shift arising from the pumping laser. Here, we propose a scheme to eliminate the rotation coupling of dual-axis K-Rb-N21e atomic comagnetometers. The residual magnetic field can be effectively removed by controlling the comagnetometer at the magnetic compensation point and the magnetic shielding layer. The light shift could be eliminated by using the K atom light shift to counteract the Rb atom light shift, in which the light shift of K atoms was optimized to the decoupling point by finely adjusting the pumping laser wavelength of the K D1 line. The feasibility and efficiency of this decoupling scheme have been experimentally verified. The output response of the coupling axis is reduced by two orders of magnitude compared to the sensitive axis. This scheme can also be applied to any atomic comagnetometer with hybrid optical pumping that experiences cross-talk coupling.

Applied Optics•Feb 22, 2018•9 citations
A spin-exchange relaxation-free comagnetometer is a promising high-precision gyroscope as its inertial measurement sensitivity can rival that of existing technologies. The magnetic field error is one of the main factors that limits the long-term stability of the comagnetometer. The steady-state response and frequency response models of a K-Rb-21Ne comagnetometer are modified by considering the spin-exchange rate between the electron spins and the nuclear spins. The modified models are used to redefine the bias magnetic sensitivity of the K-Rb-21Ne comagnetometer and the suppression method of low-frequency magnetic field error is proposed. We demonstrate the magnetic drift suppression method proposed in the article by optimizing the cell temperature and pump laser power density. This study is helpful to improve the rotation measurement performance of the K-Rb-21Ne comagnetometer.
A dual-axis atomic comagnetometer can sense the angular rotation of two measurement axes simultaneously and independently. However, there is a cross-talk coupling effect between the two axes because of the residual magnetic field and the light shift arising from the pumping laser. Here, we propose a scheme to eliminate the rotation coupling of dual-axis K-Rb-N21e atomic comagnetometers. The residual magnetic field can be effectively removed by controlling the comagnetometer at the magnetic compensation point and the magnetic shielding layer. The light shift could be eliminated by using the K atom light shift to counteract the Rb atom light shift, in which the light shift of K atoms was optimized to the decoupling point by finely adjusting the pumping laser wavelength of the K D1 line. The feasibility and efficiency of this decoupling scheme have been experimentally verified. The output response of the coupling axis is reduced by two orders of magnitude compared to the sensitive axis. This scheme can also be applied to any atomic comagnetometer with hybrid optical pumping that experiences cross-talk coupling.