基于统计光学的无透镜鬼成像数值模拟与实验验证

作为量子信息领域分支的鬼成像,由于物体的像将出现在不包含物体的光路上的特点,使得这一领域的研究引人入胜。一度认为,只有基于纠缠态双光子的纠缠光源,才能实现鬼成像;但近年来的研究表明,经典热光场也能实现这一过程。从经典统计光学入手,建立了热光场的数值模型,模拟符合热光特性的光场变化、光场传播、以及物体透射函数对热光场的调制,进而从光强度起伏的关联函数中,分别重现振幅型物体和纯相位型物体的傅里叶变换图像;通过与真实实验结果的对比,表明基于统计光学原理的该数值模型所预测的实验结果,与真实的实验结果完全一致。

As a branch of quantum information technology, ghost imaging comes to front for its unique “ghost” feature, i.e. the image would appear on the optical path that actually never pass the object. For a time, entanglement was thought to be a prerequisite, while we know now that classical thermal light can imitate this kind of imaging and there is no need for entangled beams. Based on the theory of statistical optics, we modeled the dynamic process of thermal variation, the propagation of optical fields and the optical modulation by objects, and then retrieved the Fourier transform patterns of both an amplitude-only object and a pure phase object. The latter experimental results demonstrate the accordance of numerical prediction based on statistical optics.