作　　者： ; ; ; ;

机构地区： 北京邮电大学电子工程学院光通信与光波技术教育部重点实验室

出　　处： 《半导体光电》 2006年第6期795-797,802,共4页

摘　　要： 在高非线性光纤中产生高质量的光子对对于量子信息的应用具有重要意义。在分析基于光纤中四波混频效应产生光子对原理的基础上,指出了影响光子对产生噪声的主要因素。讨论了抑制噪声的几种可能的方法,采用冷却光纤、短脉冲泵浦光源和狭窄的滤波宽度和增大四波混频的信号和闲频光带宽等方法可以有效地降低噪声,从而为高效产生光子对提供了依据。 It is important to generate high quality photon pairs in the highly nonlinear optical fiber for practical applications of quantum information. Based on analysis of .the principle of the generation of photon pairs by means of four-wave-mixing in optical fiber, main factors influencing noise generation of photon pairs have been presented. Several methods to suppress the noise have been discussed. With a cooled DSF, a short pulse and a narrow filtering bandwidth, signal and idler photons that generate with greater wavelength separation space from the bump; and high quality photon pairs with a better signal to noise ratio can be achieved in the highly nonlinear fiber.

关 键 词： 量子信息处理 光子对 噪声 抑制

领　　域： [电子电信]