Fast and High-Resolution Entangled Optical Quantum Radar Sensing Network for Complex Environment

The entangled quantum radar applies the quantum information technology to the radar sensing network and detection system. The dynamic particle changes and optical attenuation caused by complex atmospheric environments will severely limit the traditional radar performance. Due to entanglement characteristics, the entangled optical quantum radar has better anti-stealth interference ability, stronger anti-turbulence properties, and higher spatial resolution which makes it promising in complex and high-attenuation environments. In addition, quantum radar based on the entangled light source can overcome the limitations of low imaging resolution and low confidentiality in traditional target detection. Therefore, high-precision positioning and high-resolution imaging are the research focus of the quantum radar sensing network. Based on this, we first design and optimize an optical path structure of the quantum entangled light source to obtain higher brightness entangled source which is suitable for complex atmospheric environments. Second, in response to the problem of low positioning accuracy in the traditional quantum radar, we design a new positioning optical path and propose a novel entangled optical quantum positioning method based on the photon scattering model. Third, to address the problems of low resolution and slow speed in traditional quantum radar imaging, we propose a new entangled light quantum imaging method based on two-phase coincidence counting. Finally, we conduct extensive experiments to evaluate the effectiveness of the proposed method in complex atmospheric environments and further provide possibilities for the entangled light source quantum radar sensing network.

Introduction

After half a century of development, the radar technology has taken on more and more heavy missions, especially in the field of sensing and monitoring networks. But with the continuous development of science and technology, we have put forward higher requirements on how to improve the performance and resolution of radar systems. With the rapid development of the quantum information technology, it provides a new way to break through classical information processing methods. In this background, the emergence of quantum radar has brought a new perspective to sensing technology. Quantum radar relies on the basic principles of quantum mechanics, especially phenomena such as quantum superposition and entanglement, to achieve performance improvements beyond the limits of classical radar technology. At the same time, it also faces critical challenges from the electronic interference and stealth technology. The traditional radar technology uses the intensity, frequency and phase information of electromagnetic signals, and realizes target detection through coherent processing of signal characteristics [1]. However, traditional radars suffer from certain problems such as insufficient adaptability to the target and environment and the incomplete grasp of basic characteristics such as the law of difference in detecting targets [2]. In addition to the basic target acquisition function, the radar should also have target ranging, positioning, imaging and other functions. Therefore, the quantum radar technology has gradually attracted the close attention of many countries due to its superior target detection performance and excellent concealment.