基于质心法的高分辨率高探测效率N光子纠缠N 00N态超分辨量子成像  

Super⁃resolution Quantum Imaging of N⁃photon Entangled N00N Statewith High Resolution and High Detection Efficiency Based on CentroidMethod

作　　者：张黄杰 陈晨远 郝然 占春连 金尚忠 张鹏举 庄新港 费丰 Zhang Huangjie;Chen Chenyuan;Hao Ran;Zhan Chunlian;Jin Shangzhong;Zhang Pengju;Zhuang Xingang;Fei Feng(College of Optical and Electronic Technology,China Jiliang University,Hangzhou 310018,Zhejiang,China;The 41st Research Institute,China Electronics Technology Group Corporation,Qingdao 266555,Shandong,China)

机构地区：[1]中国计量大学光学与电子科技学院,浙江杭州310018 [2]中国电子科技集团有限公司第四十一研究所,山东青岛266555

出　　处：《中国激光》2024年第6期239-245,共7页Chinese Journal of Lasers

基　　金：国防技术基础项目(JSJL2020210A001);国家自然科学基金面上项目(61975182);浙江省自然科学基金重点项目(LZ23F050001)。

摘　　要：基于N光子纠缠量子成像的分辨率优势,设计了一种通用的多光子纠缠N00N态的超分辨量子成像系统,理论上成像分辨率可实现(N-1)倍的增加,成像系统的分辨率得到大幅提升。针对N00N态探测效率过低的问题,利用光学质心测量方法,保留所有探测情况,在不需要所有光子到达空间同一点的情况下,通过光子计数和适当的后处理,实现了任意数量光子下成像分辨率的提高。相较于N光子吸收方案,该方法的理论效率增加了DN-1(假设有D个像素)。所提方案可以产生具有高保真度和高稳定性(数天内保持稳定)的N00N态,有利于拓展N00N态的应用范围。所设计的系统在超分辨量子成像领域中具有较好的应用价值。Objective As a breakthrough technology in recent years,super-resolution imaging has become an important research problem in computer vision and image processing and has wide practical applications in medical,biological,security,and other fields.However,classical imaging technology is limited by the diffraction resolution limit,and it is difficult to achieve resolution breakthroughs.Quantum entanglement can transcend diffraction resolution limits by sharpening spatial interference fringes based on quantum technology evolution.The entangled N00N state has been studied because it can exceed the standard quantum limit.The interference visibility of the three-photon N00N state is higher than the limit of classical spatial super-resolution,and the pattern of the N-photon entangled N00N state is N times finer than that of classical light.Thus,the N00N state can improve the resolution of the optical system by N times.However,the probability of all N photons arriving at the same location and the detection efficiency decreases exponentially with increasing N,making the advantages of the N00N state controversial.The optical centroid measurement(OCM)promotes the application of the N00N state in super-resolution imaging.This study further applies the advantages of N-photon entangled N00N state to super-resolution quantum imaging based on existing theories and technologies.This study further proposes a new quantum imaging system to improve the resolution of object imaging.Methods This study primarily adopts theoretical analysis and simulation methods.A simulation model based on the proposed quantum imaging system is created,and the resolution enhancement of our scheme is quantified by measuring the modulation transfer function(MTF).A photon source model is constructed to generate coherent photons that are irradiated onto the object and transmitted to the receiver.The centroid position of the photons is measured using the OCM method,and the point spread function(PSF)of the imaging system is calculated using the obtained simulat

关 键 词：量子光学 量子成像 超分辨率 N00N态 光学质心测量 

分 类 号：O431.2[机械工程—光学工程]