中国物理B ›› 2026, Vol. 35 ›› Issue (7): 74201-074201.doi: 10.1088/1674-1056/ae5c71

• • 上一篇    

Sensitive sensing based on quantum correlation of photons in weak nonlinear regime

Zi-Qiang Yin(尹子强)1, Zhi-Hao Liu(刘志豪)1, Jian Tang(唐健)1, Hui Jing(景辉)1,2,3, and Xun-Wei Xu(徐勋卫)1,2,3,†   

  1. 1 Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Key Laboratory for Matter Microstructure and Function of Hunan Province, Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, Changsha 410081, China;
    2 Hunan Research Center of the Basic Discipline for Quantum Effects and Quantum Technologies, Hunan Normal University, Changsha 410081, China;
    3 Institute of Interdisciplinary Studies, Hunan Normal University, Changsha 410081, China
  • 收稿日期:2025-12-18 修回日期:2026-02-25 接受日期:2026-04-08 发布日期:2026-07-02
  • 通讯作者: Xun-Wei Xu E-mail:xwxu@hunnu.edu.cn
  • 基金资助:
    This work is supported by Quantum Science and Technology - National Science and Technology Major Project of China (Grant No. 2024ZD0301000), the National Natural Science Foundation of China (Grant Nos. 12064010, 12247105, 11935006, and 12421005), the National Key R&D Program of China (Grant No. 2024YFE0102400), and Hunan Provincial Major Sci-Tech Program (Grant No. 2023ZJ1010).

Sensitive sensing based on quantum correlation of photons in weak nonlinear regime

Zi-Qiang Yin(尹子强)1, Zhi-Hao Liu(刘志豪)1, Jian Tang(唐健)1, Hui Jing(景辉)1,2,3, and Xun-Wei Xu(徐勋卫)1,2,3,†   

  1. 1 Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Key Laboratory for Matter Microstructure and Function of Hunan Province, Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, Changsha 410081, China;
    2 Hunan Research Center of the Basic Discipline for Quantum Effects and Quantum Technologies, Hunan Normal University, Changsha 410081, China;
    3 Institute of Interdisciplinary Studies, Hunan Normal University, Changsha 410081, China
  • Received:2025-12-18 Revised:2026-02-25 Accepted:2026-04-08 Published:2026-07-02
  • Contact: Xun-Wei Xu E-mail:xwxu@hunnu.edu.cn
  • Supported by:
    This work is supported by Quantum Science and Technology - National Science and Technology Major Project of China (Grant No. 2024ZD0301000), the National Natural Science Foundation of China (Grant Nos. 12064010, 12247105, 11935006, and 12421005), the National Key R&D Program of China (Grant No. 2024YFE0102400), and Hunan Provincial Major Sci-Tech Program (Grant No. 2023ZJ1010).

摘要: Quantum correlation of photons based on quantum interference, such as unconventional photon blockade (UPB), has been extensively studied for realizing single-photon sources in a weak nonlinear regime. However, how to use this effect for other practical applications is rarely studied. Here, we propose to realize angular velocity and temperature sensing based on the quantum correlation of photons induced by quantum interference. We demonstrate that UPB can be observed in the mixing field output from a Mach—Zehnder interferometer (MZI) with two cavities in its two arms based on quantum interference. We show that the second-order correlation function of the output field is sensitive to the parameters of the system, and propose schemes to realize angular velocity and temperature sensing by measuring the second-order correlation of the photons output from the MZI. We find that the second-order correlation function of the output field is much more sensitive to the parameters of the system than the mean photon number, which provides an application scenario for UPB in sensitive sensing.

关键词: unconventional photon blockade, gyroscope, temperature sensing, Mach—Zehnder interferometer

Abstract: Quantum correlation of photons based on quantum interference, such as unconventional photon blockade (UPB), has been extensively studied for realizing single-photon sources in a weak nonlinear regime. However, how to use this effect for other practical applications is rarely studied. Here, we propose to realize angular velocity and temperature sensing based on the quantum correlation of photons induced by quantum interference. We demonstrate that UPB can be observed in the mixing field output from a Mach—Zehnder interferometer (MZI) with two cavities in its two arms based on quantum interference. We show that the second-order correlation function of the output field is sensitive to the parameters of the system, and propose schemes to realize angular velocity and temperature sensing by measuring the second-order correlation of the photons output from the MZI. We find that the second-order correlation function of the output field is much more sensitive to the parameters of the system than the mean photon number, which provides an application scenario for UPB in sensitive sensing.

Key words: unconventional photon blockade, gyroscope, temperature sensing, Mach—Zehnder interferometer

中图分类号:  (Quantum optics)

  • 42.50.-p
42.65.-k (Nonlinear optics)