| Title | Information Encoding with Optical Dielectric Metasurface via Independent Multichannels |
| Authors | Dong, Fengliang Feng, Hans Xu, Lihua Wang, Bo Song, Zhiwei Zhang, Xianfen Yan, Lanqin Li, Xiaojun Tian, Yi Wang, Wentao Sun, Lianfeng Li, Yan Chu, Weiguo |
| Affiliation | Natl Ctr Nanosci & Technol, CAS Ctr Excellence Nanosci, Nanofabricat Lab, CAS Key Lab Nanosyst & Hierarch Fabricat, Beijing 100190, Peoples R China Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China Peking Univ, Dept Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Shanxi, Peoples R China |
| Keywords | dielectric metasurface multiwavelength photon spin-dependent state Pancharatnam-Berry phase multichannel information processing |
| Issue Date | 2019 |
| Publisher | ACS PHOTONICS |
| Abstract | Information encryption and security is a prerequisite for information technology, which can be realized by an optical metasurface owing to its arbitrary manipulation over the wavelength, polarization, phase, and amplitude of light. So far information encoding can be implemented by the metasurface in one-dimensional (1D) mode (either wavelength or polarization) only with several combinations of independent channels. Herein, we design dielectric metasurfaces by multiplexing for information encoding in a two-dimensional (2D) mode of both wavelength and polarization. Sixty-three combinations made out of six independent channels by two circular polarization states (RCP and LCP) and three visible wavelengths (633, 532, and 473 nm) are experimentally demonstrated, in sharp contrast with seven combinations by three independent channels in 1D mode. This 2D mode encoding strategy enhances the encryption security dramatically and paves a novel pathway for escalating the security level of information in multichannel information encryption, anticounterfeiting, optical data storage, and information processing. |
| URI | http://hdl.handle.net/20.500.11897/552196 |
| ISSN | 2330-4022 |
| DOI | 10.1021/acsphotonics.8b01513 |
| Indexed | SCI(E) EI |
| Appears in Collections: | 物理学院 人工微结构和介观物理国家重点实验室 |
