中国物理B ›› 2023, Vol. 32 ›› Issue (10): 103202-103202.doi: 10.1088/1674-1056/acf120

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Electric field intensity measurement by using doublet electromagnetically induced transparency of cold Rb Rydberg atoms

Ting Gong(宫廷)1,2,3, Shuai Shi(师帅)1, Zhonghua Ji(姬中华)2,3,†, Guqing Guo(郭古青)1, Xiaocong Sun(孙小聪)1, Yali Tian(田亚莉)1, Xuanbing Qiu(邱选兵)1, Chuanliang Li(李传亮)1, Yanting Zhao(赵延霆)2,3, and Suotang Jia(贾锁堂)2,3   

  1. 1 Shanxi Engineering Research Center of Precision Measurement and Online Detection Equipment, School of Applied Science, Taiyuan University of Science and Technology, Taiyuan 030024, China;
    2 State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China;
    3 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
  • 收稿日期:2023-06-19 修回日期:2023-08-05 接受日期:2023-08-17 出版日期:2023-09-21 发布日期:2023-09-27
  • 通讯作者: Zhonghua Ji E-mail:jzh@sxu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 12034012, 12074231, 12274272, and 61827824), Science and technology innovation plan of colleges and universities in Shanxi Province (Grant No. 2021L313), Science and Technology Project of State Grid (Grant No. 5700-202127198A-0-0-00), Fundamental Research Program of Shanxi Province (Grant No. 202203021222204), and Taiyuan University of Science and Technology Scientific Research Initial Funding (Grant Nos. 20222008 and 20222132).

Electric field intensity measurement by using doublet electromagnetically induced transparency of cold Rb Rydberg atoms

Ting Gong(宫廷)1,2,3, Shuai Shi(师帅)1, Zhonghua Ji(姬中华)2,3,†, Guqing Guo(郭古青)1, Xiaocong Sun(孙小聪)1, Yali Tian(田亚莉)1, Xuanbing Qiu(邱选兵)1, Chuanliang Li(李传亮)1, Yanting Zhao(赵延霆)2,3, and Suotang Jia(贾锁堂)2,3   

  1. 1 Shanxi Engineering Research Center of Precision Measurement and Online Detection Equipment, School of Applied Science, Taiyuan University of Science and Technology, Taiyuan 030024, China;
    2 State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China;
    3 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
  • Received:2023-06-19 Revised:2023-08-05 Accepted:2023-08-17 Online:2023-09-21 Published:2023-09-27
  • Contact: Zhonghua Ji E-mail:jzh@sxu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 12034012, 12074231, 12274272, and 61827824), Science and technology innovation plan of colleges and universities in Shanxi Province (Grant No. 2021L313), Science and Technology Project of State Grid (Grant No. 5700-202127198A-0-0-00), Fundamental Research Program of Shanxi Province (Grant No. 202203021222204), and Taiyuan University of Science and Technology Scientific Research Initial Funding (Grant Nos. 20222008 and 20222132).

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摘要： We demonstrate a simple method to measure electric field intensity by using doublet electromagnetically induced transparency (EIT) spectra of cold Rb Rydberg atoms, where the frequency of the coupling laser does not need to be locked. Based on the Stark splitting of the Rb Rydberg state, 10D3/2, under electric fields and the corresponding calculated polarizabilities, the real electric field intensity is calculated using the difference in radio-frequency diffraction between two acousto-optic modulators, which acts as a frequency criterion that allows us to measure the electrical field without locking the coupling laser. The value measured by this simple method shows a good agreement with our previous work [Opt. Express 29 1558 (2021)] where the frequency of the coupling laser needs to be locked with an additional EIT spectrum based on atom vapor and a proportional-integral-differential feedback circuit. Our presented method can also be extended to the measurement of electric field based on hot Rydberg atom vapor, which has application in industry.

关键词: doublet electromagnetically induced transparency (EIT), Aulter-Townes (AT) splitting, Rydberg atom, electric field measurement

Abstract: We demonstrate a simple method to measure electric field intensity by using doublet electromagnetically induced transparency (EIT) spectra of cold Rb Rydberg atoms, where the frequency of the coupling laser does not need to be locked. Based on the Stark splitting of the Rb Rydberg state, 10D3/2, under electric fields and the corresponding calculated polarizabilities, the real electric field intensity is calculated using the difference in radio-frequency diffraction between two acousto-optic modulators, which acts as a frequency criterion that allows us to measure the electrical field without locking the coupling laser. The value measured by this simple method shows a good agreement with our previous work [Opt. Express 29 1558 (2021)] where the frequency of the coupling laser needs to be locked with an additional EIT spectrum based on atom vapor and a proportional-integral-differential feedback circuit. Our presented method can also be extended to the measurement of electric field based on hot Rydberg atom vapor, which has application in industry.

Key words: doublet electromagnetically induced transparency (EIT), Aulter-Townes (AT) splitting, Rydberg atom, electric field measurement

中图分类号:  (Zeeman and Stark effects)

  • 32.60.+i
32.10.Dk (Electric and magnetic moments, polarizabilities) 32.80.Ee (Rydberg states) 42.50.Gy (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)