中文摘要：

提出了一种基于PPKTP波导利用自发参量产生多通道纠缠光子对的方案．计算在使用脉冲，连续激光，Ⅰ型、Ⅱ型相位匹配这些不同条件下，同时产生位于通信波段的多通道纠缠光子对的特性．结果显示该方案能够为量子密钥分配网络提供更为高效易行的方案．

英文摘要：

A scheme to generate multi-channel photon pairs is presented, based on a periodically poled （PP） Potassium Titanyl Phosphate （KTP） waveguide via spontaneous parametric downconversion （SPDC）. Type-Ⅱ and type-Ⅰ phase matching cases with a pulsed and a cw pump laser are discussed respectively. It is analytically shown that several photon pairs could be generated in a single type-Ⅱ PPKTP waveguide, and the wavelengths of all photon pairs are in the telecom band. In type-Ⅰ case, several photon pairs can be prepared, but one photon of each pair is not in telecom hand. And,a multi-channel photon pairs source could be realized.