Holographic multiplexing metasurface with twisted diffractive neural network

As the cornerstone of AI generated content, data drives human-machine interaction and is essential for developing sophisticated deep learning agents. Nevertheless, the associated data storage poses a formidable challenge from conventional energy-intensive planar storage, high maintenance cost, and t...

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Bibliographic Details
Published in:Nature communications 2024-10, Vol.15 (1), p.9416-10, Article 9416
Main Authors: Fan, Zhixiang, Qian, Chao, Jia, Yuetian, Feng, Yiming, Qian, Haoliang, Li, Er-Ping, Fleury, Romain, Chen, Hongsheng
Format: Article
Language:English
Subjects:
147/135
639/301/1019/1015
639/624/399/1015
Computation
Data storage
Deep learning
Electromagnetic interference
Error analysis
Holography
Humanities and Social Sciences
Image enhancement
Machine learning
Maintenance costs
Metasurfaces
multidisciplinary
Multiplexing
Neural networks
Science
Science (multidisciplinary)
Storage capacity
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Summary:As the cornerstone of AI generated content, data drives human-machine interaction and is essential for developing sophisticated deep learning agents. Nevertheless, the associated data storage poses a formidable challenge from conventional energy-intensive planar storage, high maintenance cost, and the susceptibility to electromagnetic interference. In this work, we introduce the concept of metasurface disk, meta-disk, to expand the capacity limits of optical holographic storage by leveraging uncorrelated structural twist. We develop a physical twisted neural network to describe the optical behavior of the meta-disk and conduct a comprehensive lateral error analysis, where the meta-disk stores large volumes of information through internal structural multiplexing. Two-layer 640 µm x 640 µm meta-disk is sufficient to store over hundreds of high-fidelity images with SSIM of 0.8. By harnessing advanced three-dimensional (3D) printing technology, optical holographic storage is experimentally demonstrated with Pancharatnam-Berry metasurfaces. Our technology provides essential backing for the next generation of optical storage, display, encryption, and multifunctional optical analog computing. Meta-disk utilizes structural multiplexing to significantly enhance optical holographic storage capacity, enabling the storage of numerous high-fidelity images. The technology offers potential applications in optical storage and optical computing.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-024-53749-6