Cascaded Metasurface Holograms for Optical Secret Sharing
Philip Georgi, Qunshuo Wei, Basudeb Sain, Christian Schlickriede, Yongtian Wang, Lingling Huang, Thomas Zentgraf · Conference on Lasers and Electro-Optics · 2021
We demonstrate an all-optical solution for secret sharing based on metasurface holography. Metasurfaces are used as separable shares that reconstruct a secret after combination. The inherent alignment sensitivity can be used to build optical rulers.