偏振光子的多层大气散射模型及其应用  

A Model for Polarized Photons Scattering in Multilayered Atmosphere and Its Application

作　　者：史鹏[1] 张闻钊[1] 马丽珍[1] 顾永建[1] 

机构地区：[1]中国海洋大学物理系,山东青岛266100

出　　处：《大气与环境光学学报》2010年第5期334-341,共8页Journal of Atmospheric and Environmental Optics

基　　金：国家自然科学基金(60677044)资助

摘　　要：为研究偏振光子在自由空间的传播特性,将大气视作分层介质,提出了"虚粒子"的概念:它处于两层大气的分界面上,只改变光子的步长而不改变其传播方向和偏振态,从而建立了偏振光子的多层大气Mie散射模型。基于该模型,对偏振光子在多层大气中的传播过程作了Monte Carlo模拟。模拟结果表明,该模型可以清晰地揭示各种大气传输过程中光子偏振态的变化及其规律,因而能够为自由空间量子通信及其它基于偏振光大气传播的相关研究提供支持。In order to study the propagation of polarized photons in free-space, the concept ＂virtual particles＂ is proposed with the model of multilayered atmosphere. Located at the dividing surface of two atmospheric layers, the ＂virtual particles＂ only change the step distance, but not affect the propagating direction or the polarization of photons. On this basis the Mie scattering model of polarized photons in the multilayered atmosphere is established. The Monte Carlo simulation of the propagation of polarized photons in the multilayered atmosphere is made based on the model. The results show that this model can explicitly reveal the changes and their rules of polarization of photons in all kinds of atmospheric propagating processes. Therefore it can provide support for free-space quantum communication and other related studies based on atmospheric propagation of polarized photons

关 键 词：偏振光子 多层大气模型 MIE散射 虚粒子 

分 类 号：O436.2[机械工程—光学工程]