摘要
利用超短脉冲自发参量下转换产生偏振纠缠光子对,通过实验和数值计算分析不同长度BBO晶体对偏振纠缠干涉可见度的影响,并分析窄带干涉滤光片在实验测量中的作用,我们的结果说明减小晶体长度和利用窄带干涉滤光片可有效提高双光子的干涉可见度。
The two-photon polarized entangled state is generated from spontaneous parametric down conversion due to nonlinear process of type Ⅱ BBO crystal pumped by ultrashot pulsed laser. We discussed interference visibility of the polarized entangled state generated from different BBO crystals through experiments and numerical simulation. The narrow-band interference filters are also considered in our analysis. Our results show that the interference visibility can be increased by using shorter BBO crystal and narrow-band interference filters.
出处
《量子光学学报》
CSCD
2003年第3期93-96,共4页
Journal of Quantum Optics
基金
福建省青年科技人才创新项目资金(2001J008)
