论文标题
在参数下转换中的角光谱与结构化光的转移
Transfer of angular spectrum in parametric down-conversion with structured light
论文作者
论文摘要
我们在参数下转换中开发了正式的角度频谱传递的方法，该方法允许使用结构化束泵送。该方案是基于由具有矢量涡流极化曲线的激光束泵送的纠缠光子源。这创建了一个两光子量子状态，该量子态表现出偏振依赖性的横向相关性，可以通过在空间分离的光子上的巧合测量来访问。该计算的相关性显示出典型的向量梁的自旋轨道曲线，但是分布在单独的测量区域上。我们的方法允许设计泵梁矢量的空间结构和测量策略，以实现这些纠缠状态的潜在应用，例如在量子通信中。
We develop the formal approach to the angular spectrum transfer in parametric down-conversion that allows pumping with a structured beam. The scheme is based on an entangled photon source pumped by a laser beam structured with a vector-vortex polarization profile. This creates a two-photon quantum state exhibiting polarization-dependent transverse correlations that can be accessed through coincidence measurements on the spatially separated photons. The calculated correlations are shown to present a spin-orbit profile typical of vector beams, however, distributed on separate measurement regions. Our approach allows the design of the pump beam vector spatial structure and measurement strategies for potential applications of these entangled states, such as in quantum communication.
