量子纠缠实验中SPDC光谱分布的计算分析与实验研究  

Calculation and experimentation of SPDC light spectrum distribution in quantum entanglement experiment

作　　者：孙文博[1] 王合英[1] 陈宜保[1] 陈宏[1] 

机构地区：[1]清华大学物理系,北京100084

出　　处：《物理实验》2014年第11期1-5,共5页Physics Experimentation

摘　　要：理论分析了量子纠缠教学实验中用于纠缠光子对产生的Ⅱ类自发参量下转换(SPDC)光场的光谱分布特征,通过数值模拟给出403nm连续激光光源通过BBO晶体产生的Ⅱ类SPDC光场信号光分布曲线.据此设计了SPDC过程产生的806nm光子分布测量实验,实验结果与模拟结果一致.The property of the spontaneous parametric downward conversion （SPDC） light spectrum distribution was analyzed theoretically, and the field distribution of the type Ⅱ SPDC light generated in BBO crystal pumped by a 403 nm continuous laser was given by numerical simulation. A photon （of the wavelength of 806 nm, created by SPDC） distribution measurement apparatus was also designed. The experimental results were in accordance to the simulation.

关 键 词：量子纠缠 双光子纠缠源 自发参量下转换 Ⅱ类相位匹配 光谱分布 

分 类 号：O413[理学—理论物理]