下转换光子对的经典模拟与光通讯讯号的恢复

Classical Simulation of Downward Conversion Photon Pairs and Recover of Optical Communication Signals

由于下转换光子对具有很强的时间相关性,可用来进行无噪声的光通讯。本文提出了一种按照经典理论模拟下转换光子对的方法,即使一对相同的光脉冲具有高频的同位相内部结构,并通过实验利用这种模拟的光子对恢复了被噪声完全掩盖的读号,不仅可作为改善光通讯的参考,也有助于对下转换光子对特性的探讨。

Since the downward conversion photon pairs have strong correlation in time, they can be used for noise - free optical communication. We suggested a method to provide a classical simulation of downward conversion photon pairs that is to produce two similar beams of light pulses with high frequency coherent internal structure,and use it to recover the optical communication signals that lost in noises. Our experimental results are helpful for the improvement of optical communication and the understanding of the characteristics of downward conversion photon pairs.