Sorting complex light beams: Diffractive metasurface design advances optical physics

https://phys.org/news/2024-06-complex-metasurface-advances-optical-physics.html

"simultaneous sorting, distinguishing arbitrary vector structured beams with spin-multiplexed metasurfaces...  transmits information through intensity, wavelength, and spatial and polarization configurations... compact, efficient, operates at microscopic level... directs light through metasurface layers, each shaping light incrementally into predetermined patterns separated/ identified by its unique characteristics... efficient high-dimensional high-speed secure optical communication, high-speed quantum computing (data encoding)"