Optimizing single-photon quantum radar detection through partially postselected filtering

• URL: http://arxiv.org/abs/2402.16031v2
• Date: Thu, 7 Mar 2024 15:34:29 GMT
• Title: Optimizing single-photon quantum radar detection through partially postselected filtering
• Authors: Liangsheng Li, Maoxin Liu, Wen-Long You, Chengjie Zhang, Shengli Zhang, Hongcheng Yin, Zhihe Xiao, and Yong Zhu
• Abstract summary: In this study, we explore an approach aimed at enhancing the transmission or reflection of absorbing materials through measurements entangled photon states. Our results demonstrate a remarkable enhancement in the signal-to-noise ratio imaging, albeit an increase in mean-square error. These findings highlight the potential practical applications of our approach in the implementation of quantum radar.
• Score: 6.205890788332882
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In this study, we explore an approach aimed at enhancing the transmission or reflection coefficients of absorbing materials through the utilization of joint measurements of entangled photon states. On the one hand, through the implementation of photon catalysis in the reflected channel, we can effectively modify the state of the transmission channel, leading to a notable improvement in the transmission ratio. Similarly, this approach holds potential for significantly amplifying the reflection ratio of absorbing materials, which is useful for detecting cooperative targets. On the other hand, employing statistical counting methods based on the technique of heralding on zero photons, we evaluate the influence of our reflection enhancement protocol for detecting noncooperative targets, which is validated through Monte Carlo simulations of a quantum radar setup affected by Gaussian white noise. Our results demonstrate a remarkable enhancement in the signal-to-noise ratio of imaging, albeit with an increase in mean-square error. These findings highlight the potential practical applications of our approach in the implementation of quantum radar.

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