论文标题
从介电纳米谐振器中转换光子的定向发射
Directional emission of down-converted photons from a dielectric nano-resonator
论文作者
论文摘要
相关光子对的创建是当代量子光学元件中的关键主题之一。在这里，我们从理论上描述了在自发参数下转换过程中的光子对产生，这是由介电材料制成的介电材料制成的，该介电材料具有散装$χ^{（2）} $非线性。我们选择满足MIE理论所描述的共振本征的状况的纳米颗粒大小。我们揭示了可以使用非线性kerker型效应观察到高度方向的光子对生成，并且该方案提供了有用的极化相关性。
Creation of correlated photon pairs is one of the key topics in contemporary quantum optics. Here, we theoretically describe the generation of photon pairs in the process of spontaneous parametric down-conversion in a resonant spherical nanoparticle made of a dielectric material with bulk $χ^{(2)}$ nonlinearity. We pick the nanoparticle size that satisfies the condition of resonant eigenmodes described by Mie theory. We reveal that highly directional photon-pair generation can be observed utilising the nonlinear Kerker-type effect, and that this regime provides useful polarisation correlations.
