中国物理B ›› 2023, Vol. 32 ›› Issue (5): 50304-050304.doi: 10.1088/1674-1056/ac9fc3

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One-shot detection limits of time-alignment two-photon illumination radar

Wen-Long Gao(高文珑), Lu-Ping Xu(许录平), Hua Zhang(张华), Bo Yan(阎博), Peng-Xian Li(李芃鲜), and Gui-Ting Hu(胡桂廷)   

  1. School of Aerospace Science and Technology, Xidian University, Xi'an 710126, China
  • 收稿日期:2022-08-16 修回日期:2022-10-29 接受日期:2022-11-03 出版日期:2023-04-21 发布日期:2023-04-26
  • 通讯作者: Lu-Ping Xu, Hua Zhang E-mail:Lpxu@mail.xidian.edu.cn;zhanghua@mail.xidian.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 62071363) and the Key Research and Development Program of Shaanxi Province, China (Grant No. 2021LLRH-06).

One-shot detection limits of time-alignment two-photon illumination radar

Wen-Long Gao(高文珑), Lu-Ping Xu(许录平), Hua Zhang(张华), Bo Yan(阎博), Peng-Xian Li(李芃鲜), and Gui-Ting Hu(胡桂廷)   

  1. School of Aerospace Science and Technology, Xidian University, Xi'an 710126, China
  • Received:2022-08-16 Revised:2022-10-29 Accepted:2022-11-03 Online:2023-04-21 Published:2023-04-26
  • Contact: Lu-Ping Xu, Hua Zhang E-mail:Lpxu@mail.xidian.edu.cn;zhanghua@mail.xidian.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 62071363) and the Key Research and Development Program of Shaanxi Province, China (Grant No. 2021LLRH-06).

摘要: Quantum radar has recently gained increasing importance in a number of military applications. The estimation accuracy of one-shot quantum illumination events is significant in target detection. However, the accuracy is inevitably deteriorated by measurement noises. The traditional one-shot illumination emits a single photon towards a certain area which thermal noise exists in the path to, and the states of the received photons are hard to distinguish in the following processing. Therefore, a new optical probe source is proposed in this work. The independent detecting unit in the enhanced illumination is comprised of two photons aligned in time by using Hong-Ou-Mandel (HOM) interferometer. Further, one-shot detection in a general discrete model is realized and it proves a significant promotion in accuracy. The expansion of useful parts in parameter space and the lower minimal error probability for hypothesis testing have been mathematically demonstrated. The accuracy of one-shot detection can be effectively improved by the proposed scheme implying that it possesses great potential applications in quantum illumination and imaging.

关键词: quantum information, quantum optics, photonic

Abstract: Quantum radar has recently gained increasing importance in a number of military applications. The estimation accuracy of one-shot quantum illumination events is significant in target detection. However, the accuracy is inevitably deteriorated by measurement noises. The traditional one-shot illumination emits a single photon towards a certain area which thermal noise exists in the path to, and the states of the received photons are hard to distinguish in the following processing. Therefore, a new optical probe source is proposed in this work. The independent detecting unit in the enhanced illumination is comprised of two photons aligned in time by using Hong-Ou-Mandel (HOM) interferometer. Further, one-shot detection in a general discrete model is realized and it proves a significant promotion in accuracy. The expansion of useful parts in parameter space and the lower minimal error probability for hypothesis testing have been mathematically demonstrated. The accuracy of one-shot detection can be effectively improved by the proposed scheme implying that it possesses great potential applications in quantum illumination and imaging.

Key words: quantum information, quantum optics, photonic

中图分类号:  (Quantum information)

  • 03.67.-a
03.67.Mn (Entanglement measures, witnesses, and other characterizations) 42.55.Tv (Photonic crystal lasers and coherent effects)