Angular momentum holography via a minimalist metasurface for optical nested encryption

Metasurfaces can perform high-performance multi-functional integration by manipulating the abundant physical dimensions of light, demonstrating great potential in high-capacity information technologies. The orbital angular momentum (OAM) and spin angular momentum (SAM) dimensions have been respectively explored as the independent carrier for information multiplexing. However, fully managing these two intrinsic properties in information multiplexing remains elusive. Here, we propose the concept of angular momentum (AM) holography which can fully synergize these two fundamental dimensions to act as the information carrier, via a single-layer, non-interleaved metasurface. The underlying mechanism relies on…

• NN
  National Natural Science Foundation of China

  Awards: 52005175, 12204165, 52111530233, No. 62275078, 61975133, 62275078, 61935013, Grant No. 2021YFB3600500
• NS
  Natural Science Foundation of Guangdong Province

  Award: 2020A1515011185
• HU
  Hunan University
• TU
  Tongji University
• SU
  Shenzhen University
• SK
  State Key Laboratory of Tribology

  Award: SKLTKF20B04
• NK
  National Key Research and Development Program of China

  Award: 2021YFB3600500