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新型轨道角动量(OAM)探测器:突破技术瓶颈,推动光量子技术发展
研究人员在实验中运用了多种关键技术。首先,采用两种方法制备单光子量子态,分别是利用衰减的氦氖(He-Ne)激光和 SLM,以及通过自发参量下转换(SPDC)过程。其次,搭建了基于干涉仪的检测装置,其中包含自制的图像旋转器(IR)和单光子敏感的电子倍增电荷耦合器件(EMCCD)相机。利用干涉仪的特性,结合特定的光学元件组合,如四分之一波片(Q)、半波片(H)等,实现对 OAM ...
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