In situ real-time measurement for electron spin polarization in atomic spin gyroscopes
Summary: Atomic spin gyroscopes (ASGs) based on spin-exchange relaxation-free (SERF) co-magnetometers represent a new generation of ultra-high-precision inertial sensors. However, their long-term stability is significantly constrained by the stability of electron spin polarization. Despite its criti...
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Elsevier
2025-02-01
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| Series: | iScience |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004225000161 |
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| author | Feng Li Haoying Pang Zhuo Wang Wenfeng Fan Min Zhang Zehua Liu Jiahang Li Bodong Qin Xinxiu Zhou Xusheng Lei Ruigang Wang |
| author_facet | Feng Li Haoying Pang Zhuo Wang Wenfeng Fan Min Zhang Zehua Liu Jiahang Li Bodong Qin Xinxiu Zhou Xusheng Lei Ruigang Wang |
| author_sort | Feng Li |
| collection | DOAJ |
| description | Summary: Atomic spin gyroscopes (ASGs) based on spin-exchange relaxation-free (SERF) co-magnetometers represent a new generation of ultra-high-precision inertial sensors. However, their long-term stability is significantly constrained by the stability of electron spin polarization. Despite its critical importance, current research lacks effective methods for in situ and real-time measurement of electron spin polarization. This paper addresses this gap by developing a model for pump laser propagation within the vapor cell and proposing an Euler-particle swarm optimization (PSO) algorithm to estimate the model’s unknown parameters. By utilizing artificial neural networks, we derive an output equation for electron spin polarization, using transmitted laser power and cell temperature as independent variables. Comparative experiments validate the accuracy of the proposed method, and perturbation experiments demonstrate its real-time capability. The proposed in situ real-time measurement method for electron spin polarization lays a solid foundation for improving closed-loop control and enhancing the long-term stability of ASGs. |
| format | Article |
| id | doaj-art-8162b08098da4be48f8c4f6c775f3a17 |
| institution | Kabale University |
| issn | 2589-0042 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj-art-8162b08098da4be48f8c4f6c775f3a172025-01-22T05:43:07ZengElsevieriScience2589-00422025-02-01282111757In situ real-time measurement for electron spin polarization in atomic spin gyroscopesFeng Li0Haoying Pang1Zhuo Wang2Wenfeng Fan3Min Zhang4Zehua Liu5Jiahang Li6Bodong Qin7Xinxiu Zhou8Xusheng Lei9Ruigang Wang10Institute of Large-scale Scientific Facility and Centre for Zero Magnetic Field Science, Beihang University, Beijing 100083, China; School of Instrumentation and Optoelectronics Engineering, Beihang University, Beijing 100083, ChinaInstitute of Large-scale Scientific Facility and Centre for Zero Magnetic Field Science, Beihang University, Beijing 100083, China; School of Instrumentation and Optoelectronics Engineering, Beihang University, Beijing 100083, China; National Institute of Extremely-Weak Magnetic Field Infrastructure, Hangzhou 10587, China; Corresponding authorSchool of Instrumentation and Optoelectronics Engineering, Beihang University, Beijing 100083, China; Corresponding authorInstitute of Large-scale Scientific Facility and Centre for Zero Magnetic Field Science, Beihang University, Beijing 100083, China; School of Instrumentation and Optoelectronics Engineering, Beihang University, Beijing 100083, China; National Institute of Extremely-Weak Magnetic Field Infrastructure, Hangzhou 10587, ChinaInstitute of Large-scale Scientific Facility and Centre for Zero Magnetic Field Science, Beihang University, Beijing 100083, China; School of Instrumentation and Optoelectronics Engineering, Beihang University, Beijing 100083, ChinaInstitute of Large-scale Scientific Facility and Centre for Zero Magnetic Field Science, Beihang University, Beijing 100083, China; School of Instrumentation and Optoelectronics Engineering, Beihang University, Beijing 100083, ChinaInstitute of Large-scale Scientific Facility and Centre for Zero Magnetic Field Science, Beihang University, Beijing 100083, China; School of Instrumentation and Optoelectronics Engineering, Beihang University, Beijing 100083, ChinaInstitute of Large-scale Scientific Facility and Centre for Zero Magnetic Field Science, Beihang University, Beijing 100083, China; School of Instrumentation and Optoelectronics Engineering, Beihang University, Beijing 100083, ChinaInstitute of Large-scale Scientific Facility and Centre for Zero Magnetic Field Science, Beihang University, Beijing 100083, China; School of Instrumentation and Optoelectronics Engineering, Beihang University, Beijing 100083, China; National Institute of Extremely-Weak Magnetic Field Infrastructure, Hangzhou 10587, China; Hefei National Laboratory, Hefei 230088, ChinaInstitute of Large-scale Scientific Facility and Centre for Zero Magnetic Field Science, Beihang University, Beijing 100083, China; School of Instrumentation and Optoelectronics Engineering, Beihang University, Beijing 100083, China; National Institute of Extremely-Weak Magnetic Field Infrastructure, Hangzhou 10587, China; Hefei National Laboratory, Hefei 230088, ChinaSchool of Information Science and Technology, Hangzhou Normal University, Hangzhou 311121, ChinaSummary: Atomic spin gyroscopes (ASGs) based on spin-exchange relaxation-free (SERF) co-magnetometers represent a new generation of ultra-high-precision inertial sensors. However, their long-term stability is significantly constrained by the stability of electron spin polarization. Despite its critical importance, current research lacks effective methods for in situ and real-time measurement of electron spin polarization. This paper addresses this gap by developing a model for pump laser propagation within the vapor cell and proposing an Euler-particle swarm optimization (PSO) algorithm to estimate the model’s unknown parameters. By utilizing artificial neural networks, we derive an output equation for electron spin polarization, using transmitted laser power and cell temperature as independent variables. Comparative experiments validate the accuracy of the proposed method, and perturbation experiments demonstrate its real-time capability. The proposed in situ real-time measurement method for electron spin polarization lays a solid foundation for improving closed-loop control and enhancing the long-term stability of ASGs.http://www.sciencedirect.com/science/article/pii/S2589004225000161Computational physicsQuantum theoryMaterials characterizationMaterials application |
| spellingShingle | Feng Li Haoying Pang Zhuo Wang Wenfeng Fan Min Zhang Zehua Liu Jiahang Li Bodong Qin Xinxiu Zhou Xusheng Lei Ruigang Wang In situ real-time measurement for electron spin polarization in atomic spin gyroscopes iScience Computational physics Quantum theory Materials characterization Materials application |
| title | In situ real-time measurement for electron spin polarization in atomic spin gyroscopes |
| title_full | In situ real-time measurement for electron spin polarization in atomic spin gyroscopes |
| title_fullStr | In situ real-time measurement for electron spin polarization in atomic spin gyroscopes |
| title_full_unstemmed | In situ real-time measurement for electron spin polarization in atomic spin gyroscopes |
| title_short | In situ real-time measurement for electron spin polarization in atomic spin gyroscopes |
| title_sort | in situ real time measurement for electron spin polarization in atomic spin gyroscopes |
| topic | Computational physics Quantum theory Materials characterization Materials application |
| url | http://www.sciencedirect.com/science/article/pii/S2589004225000161 |
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