使用多功能成像超构透镜实现任意结构化量子发射
Arbitrary structured quantum emission with a multifunctional imaging metalens
AI总结：
本文提出使用超薄偏振分束超构透镜，在室温下实现单光子发射体量子发射的任意结构化，同时操纵方向性、偏振和轨道角动量等多个自由度，释放固态SPEs作为高维量子源的潜力。
摘要：
在多个自由度上对单光子发射体的光发射进行结构化，对于面向更高维度的量子信息处理具有重要意义。然而，对量子光源发射的传统控制依赖于使用多个笨重的光学元件或功能有限的纳米结构谐振器，限制了多维剪裁的潜力。在此，我们介绍了使用一种超薄偏振分束超构透镜，在室温下对量子发射进行任意结构化。由于在单个超构原子层级实现了完全且独立的偏振和相位控制，所设计的超构透镜能够对六方氮化硼中超亮缺陷的量子发射进行同时成像，并将任意波前印在源的正交偏振态上。这种混合量子超构透镜能够同时操纵量子光源的多个自由度，包括方向性、偏振和轨道角动量。所展示的在多个自由度上对量子发射的任意波前整形，可以充分释放固态SPEs作为先进量子光子应用的高维量子源的潜力。
英文摘要：
Structuring light emission from single-photon emitters in multiple degrees of freedom is of a great importance for quantum information processing towards higher dimensions. However, traditional control of emission from quantum light sources relies on the use of multiple bulky optical elements or nanostructured resonators with limited functionalities, constraining the potential of multi-dimensional tailoring. Here we introduce the use of an ultrathin polarisation-beam-splitting metalens for the arbitrary structuring of quantum emission at room temperature. Owing to the complete and independent polarisation and phase control at a single meta-atom level, the designed metalens enables simultaneous imaging of quantum emission from ultra-bright defects in hexagonal boron nitride and imprinting of an arbitrary wavefront onto orthogonal polarisation states of the sources. The hybrid quantum metalens enables simultaneous manipulation of multiple degrees of freedom of a quantum light source, including directionality, polarisation, and orbital angular momentum. The demonstrated arbitrary wavefront shaping of quantum emission in multiple degrees of freedom could unleash the full potential of solid-state SPEs for their use as high-dimensional quantum sources for advanced quantum photonic applications.
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