Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/89142
Title: | Reprogrammable meta-hologram for optical encryption | Authors: | Qu, G Yang, W Song, Q Liu, Y Qiu, CW Han, J Tsai, DP Xiao, S |
Issue Date: | 2020 | Source: | Nature communications, 2020, v. 11, 5484, p. 1-5 | Abstract: | Meta-holographic encryption is a potentially important technique for information security. Despite rapid progresses in multi-tasked meta-holograms, the number of information channels available in metasurfaces is limited, making meta-holographic encryption vulnerable to some attacking algorithms. Herein, we demonstrate a re-programmable metasurface that can produce arbitrary holographic images for optical encryption. The encrypted information is divided into two matrices. These two matrices are imposed to the incident light and the metasurface, respectively. While the all-dielectric metasurface is static, the phase matrix of incident light provides additional degrees of freedom to precisely control the eventual functions at will. With a single Si metasurface, arbitrary holographic images and videos have been transported and decrypted. We hope that this work paves a more promising way to optical information encryption and authentication. | Publisher: | Nature Publishing Group | Journal: | Nature communications | EISSN: | 2041-1723 | DOI: | 10.1038/s41467-020-19312-9 | Rights: | © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. The following publication Qu, G., Yang, W., Song, Q., Liu, Y., Qiu, C. -., Han, J., . . . Xiao, S. (2020). Reprogrammable meta-hologram for optical encryption. Nature Communications, 11(1), 5484, 1-5 is available at https://dx.doi.org/10.1038/s41467-020-19312-9 |
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