论文标题
温度不敏感的II型准定型自发参数下调
Temperature insensitive type II quasi-phasematched spontaneous parametric downconversion
论文作者
论文摘要
证明磷酸钾（KTP）的折射率的温度依赖性可实现具有低温灵敏度的II型自发参数下调（SPDC）。计算表明，在1165nm左右的光子发射光子以及在整个电信频段中为波长产生潜在的有用区域。我们在实验中证明了效果，观察到电信o频段内的1326nm温度不敏感的退化发射。该结果在用于资源受限环境的纠缠光子源的开发中具有实际应用，我们证明了一个简单的极化纠缠来源作为概念证明。
The temperature dependence of the refractive indices of potassium titanyl phosphate (KTP) are shown to enable quasi-phasematched type II spontaneous parametric downconversion (SPDC) with low temperature sensitivity. Calculations show the effect to be maximised for emission of photons at around 1165nm, as well as producing potentially useful regions for wavelengths throughout the telecommunications bands. We demonstrate the effect experimentally, observing temperature-insensitive degenerate emission at 1326nm, within the telecommunications O band. This result has practical applications in the development of entangled photon sources for resource-constrained environments, and we demonstrate a simple polarization entangled source as a proof of concept.
