CAJ | 학술논문

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.
제출료일충기우PPKTP파도이용자발삼양산생다통도규전광자대적방안.계산재사용맥충,련속격광,Ⅰ형、Ⅱ형상위필배저사불동조건하,동시산생위우통신파단적다통도규전광자대적특성.결과현시해방안능구위양자밀약분배망락제공경위고효역행적방안.
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 band.And,a multi-channel photon pairs source could be realized.