Secret sharing holographic encryption with off-axis dual-channel metasurface

摘要

Different from traditional metasurface holographic encryption with phase-only encoding technology, we proposed a kind of secret sharing encryption scheme with off-axis dual-channel metasurface. The secret information can be recovered only by decoding and stacking all the off-axis angle channels, while chaotic images could be extracted in single channel decoding process, further improving the information security.