Light beams carrying spin angular momentum (SAM) and orbital angular momentum (OAM) have created novel opportunities in the areas of optical communications, imaging, micromanipulation, and quantum optics. In article number 2000062, Ting Xu, Yanqing Lu, and co‐workers demonstrate an efficient detection approach for measuring multiple SAM and OAM modes simultaneously through a planar nanophotonic demultiplexer based on an all‐dielectric metasurface. The ultracompact multifunctional architecture is envisioned to enable simultaneous manipulation and measurement of polarization and spin encoded photon states.

中文翻译：

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纳米光子多路分解器：通过介电超表面对多个自旋和轨道角莫曼塔的宽带检测（激光光子，修订版14（9）/ 2020）

带有自旋角动量（SAM）和轨道角动量（OAM）的光束在光通信，成像，显微操作和量子光学领域创造了新的机遇。在2000062号文章中，徐婷，卢艳青和他的同事们演示了一种有效的检测方法，该方法可以通过基于全介电超表面的平面纳米光子解复用器同时测量多个SAM和OAM模式。设想了超紧凑的多功能体系结构，以实现偏振和自旋编码光子状态的同时操纵和测量。