Closed-Loop Control of Compensation Point in the 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:mi mathvariant="normal">K</mml:mi><mml:mtext>−</mml:mtext><mml:mi>Rb</mml:mi><mml:msup><mml:mtext>−</mml:mtext><mml:mn>21</mml:mn></mml:msup><mml:mi>Ne</mml:mi></mml:math>
 Comagnetometer

Jiang, Liwei; Quan, Wei; Liu, Feng; Fan, Wenfeng; Xing, Li; Duan, Lihong; Liu, Wu-Ming; Fang, Jiancheng

doi:10.1103/physrevapplied.12.024017

Cited by 36 publications

(7 citation statements)

References 38 publications

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“…Besides, the measurable monotone range is smaller and closely related to the pump power. In our previous work, this similar phenomenon has been observed in the parametrically modulated dual-axis atomic spin gyroscope [8] and the investigation on the realtime closed-loop control of the compensation point in the K-Rb- 21 Ne comagnetometer [20] and can confirm these tested results further.…”

Section: Experimental Setup and Resultssupporting

confidence: 81%

Investigation on Rotation Response of Spin-Exchange Relaxation-Free Atomic Spin Gyroscope

et al. 2019

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Spin-exchange relaxation-free atomic spin gyroscope (SERF gyro) has ultrahigh theoretical sensitivity and is regarded as one of the most potential atomic gyroscopes. To investigate its rotation response, a high linear atomic spin precession detection module was developed firstly by modifying the fiber reflective Sagnac interferometer for atomic spin precession detection and operating it in closed-loop mode. The SERF gyro based on K-Rb-21 Ne comagnetometer was built and tested and appeared obvious nonlinear response feature. The nonlinear rotation response model was deduced by assuming the rotation-induced nuclei spin procession detecting as an in-situ magnetometer inside the SERF gyro and the fitting curves are in good agreement with the experimental results. The optimized pump power for maximum sensitivity and measurable dynamic range were analyzed theoretically and demonstrated experimentally. The investigation results show that the nonlinear rotation response is an intrinsic property of SERF gyro and its measurable dynamic range is limited due to the saturation characteristic of the sum of pumping and relaxation rate. This indicates that SERF gyro is propitious to a position gyroscope with high sensitivity.INDEX TERMS Atomic spin gyroscope, spin-exchange relaxation-free, nonlinear rotation response model, atomic spin precession detection.

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Section: Experimental Setup and Resultssupporting

confidence: 81%

Investigation on Rotation Response of Spin-Exchange Relaxation-Free Atomic Spin Gyroscope

et al. 2019

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“…Jiang et al also proposed the first real-time closed-loop control of the nuclear spin selfcompensation point in SERF inertial measurements, which improves the system stability and extends the linear measurement range by locking the electron resonance. Alkali metal electrons are not affected by the longitudinal ambient magnetic field fluctuations and nuclear magnetization [77]. In 2020, Huang et al studied the laser polarization error of the detection system in the SERF inertial measurement device [78].…”

Section: Inertial Navigationmentioning

confidence: 99%

Progress and applications of quantum precision measurement based on SERF effect

Zhai

Yue²,

Li³

et al. 2022

Front. Phys.

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With the development of quantum precision measurement technology, measurement methods based on magnetic, optical and atomic interactions have started to receive widespread attention. Among them, quantum precision measurement based on the spin-exchange relaxation-free (SERF) effect shows great potential by its ultra-high measurement sensitivity. This paper introduces the basic operation principles of the magnetic field and inertia measurement based on the SERF effect, and focuses on the research progress and applications of SERF quantum precision measurement in fundamental physics, inertial navigation and biomedicine. Finally, we propose a prospect for the directions of SERF quantum precision measurement.

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“…Equation ( 16) includes the sum of two Lorentzian curves centered at frequencies ±ω 0 . Because the resonance frequency ω 0 is larger than the linewidth ∆ω, the counterpropagating response centered at −ω 0 can be approximately ignored [33] to simplify Eq. ( 16) to…”

Section: Equilibrium Spin Polarizationmentioning

confidence: 99%

Spin-exchange relaxation of naturally abundant Rb in a K–Rb–²¹Ne self-compensated atomic comagnetometer*

Lu¹,

Zhai²,

Zhang³

et al. 2020

Chinese Phys. B

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The total effective spin-exchange relaxation of naturally abundant Rb in a K–Rb–21Ne comagnetometer is analyzed, and the results show that the coexistence of 87Rb and 85Rb isotopes in the same volume can lead to a large extra spin-exchange broadening compared to pure 87Rb. This broadening mainly comes from the contribution of the equivalent reduction in the Rb spin-exchange rate. On this basis, an approximate relaxation model is proposed and experimentally demonstrated to be more accurate than that from a previous work. This study also provides a method for determining the properties of alkali-metal vapor cells.

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Closed-Loop Control of Compensation Point in the K−Rb−21Ne Comagnetometer

Cited by 36 publications

References 38 publications

Investigation on Rotation Response of Spin-Exchange Relaxation-Free Atomic Spin Gyroscope

Investigation on Rotation Response of Spin-Exchange Relaxation-Free Atomic Spin Gyroscope

Progress and applications of quantum precision measurement based on SERF effect

Spin-exchange relaxation of naturally abundant Rb in a K–Rb–²¹Ne self-compensated atomic comagnetometer*

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Closed-Loop Control of Compensation Point in the K−Rb−21Ne Comagnetometer

Cited by 36 publications

References 38 publications

Investigation on Rotation Response of Spin-Exchange Relaxation-Free Atomic Spin Gyroscope

Investigation on Rotation Response of Spin-Exchange Relaxation-Free Atomic Spin Gyroscope

Progress and applications of quantum precision measurement based on SERF effect

Spin-exchange relaxation of naturally abundant Rb in a K–Rb–21Ne self-compensated atomic comagnetometer*

Contact Info

Product

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Spin-exchange relaxation of naturally abundant Rb in a K–Rb–²¹Ne self-compensated atomic comagnetometer*