湍流对基于纠缠源关联成像的影响

Correlated imaging has been the frontier of the cross research of quantum infromation and imaging optics in recent years, and it is a new imaging mode.At present, correlated imaging using calssical thermal source is developing towards technicalization and practicality.By comparison,correlated imaging based on entangled source is lagging behind seriously, while this imaging technique has a particular advantage.In view of the present situation, this project focuses on investigating the effects from turbulence on correlated imaging using entangled source; By comparing with the corresponding results from calssical thermal source,we give the difference of the effects from turbulence on correlated imaging based on the two sources; then investigate quantificationally the effects from the efficiency and sensitivity of the detector on imaging capacity of correlated imaging system; thereby, we can further perfect correlated imaging theory. The investigation of this project is of great importance to learning, and is an important and unresolved problem in quantum optics field.Moreover, the investigation of this project will provide theoretical guidance for the new optical imaging system design and optimization.

关联成像是近年来量子信息和成像光学的交叉学科前沿，是一种新型的成像模式。目前，基于经典热光源关联成像正朝向技术化和实用化方向发展。相比之下，基于纠缠源关联成像的发展滞后严重，而这样的成像技术本身有其独特的优势。鉴于这样的现状，本项目拟重点研究湍流对基于纠缠源关联成像的影响；通过与经典热光源相关结果的对比分析，总结湍流对两种光源实现的关联成像影响的差异；定量研究探测器效率和灵敏度对关联成像系统成像能力的影响；从而进一步完善关联成像理论。本项目的研究具有重要的学术意义，是目前量子光学领域中一个重要的、尚待解决的问题。而且，项目的研究将会为新型光学成像系统设计及优化提供理论指导。

本项目致力于分析湍流对基于纠缠源等弱光关联成像影响的一些基本问题。建立弱光即光子计数关联成像的模型，分析噪声对成像结果的影响；提出弱光条件下抑制噪声，进而提高成像信噪比的方法；将成像物体由透射型转向更为实用的反射型，并给出相应的实验结果；对于反射关联成像，分析入射角度和反射角度对关联成像结果的影响；在反射关联成像的基础上，通过实验结果来分析物探测器的抖动对成像分辨率的影响；给出分析关联成像分辨率的点扩散函数的统一理论。另外，我们也将大气湍流拓展为海洋湍流，分析了其对部分相干光传输的影响。