Unlocking ultra-high holographic information capacity through nonorthogonal polarization multiplexing

Jie Wang, Jin Chen, Feilong Yu, Rongsheng Chen, Jiuxu Wang, Zengyue Zhao, Xuenan Li, Huaizhong Xing, Guanhai Li (), Xiaoshuang Chen and Wei Lu
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Jie Wang: Chinese Academy of Sciences
Jin Chen: Chinese Academy of Sciences
Feilong Yu: Chinese Academy of Sciences
Rongsheng Chen: Chinese Academy of Sciences
Jiuxu Wang: Chinese Academy of Sciences
Zengyue Zhao: Chinese Academy of Sciences
Xuenan Li: Chinese Academy of Sciences
Huaizhong Xing: College of Physics, DongHua University
Guanhai Li: Chinese Academy of Sciences
Xiaoshuang Chen: Chinese Academy of Sciences
Wei Lu: Chinese Academy of Sciences

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract Contemporary studies in polarization multiplexing are hindered by the intrinsic orthogonality constraints of polarization states, which restrict the scope of multiplexing channels and their practical applications. This research transcends these barriers by introducing an innovative nonorthogonal polarization-basis multiplexing approach. Utilizing spatially varied eigen-polarization states within metaatoms, we successfully reconstruct globally nonorthogonal channels that exhibit minimal crosstalk. This method not only facilitates the generation of free-vector holograms, achieving complete degrees-of-freedom in three nonorthogonal channels with ultra-low energy leakage, but it also significantly enhances the dimensions of the Jones matrix, expanding it to a groundbreaking 10 × 10 scale. The fusion of a controllable eigen-polarization engineering mechanism with a vectorial diffraction neural network culminates in the experimental creation of 55 intricate holographic patterns across these expanded channels. This advancement represents a profound shift in the field of polarization multiplexing, unlocking opportunities in advanced holography and quantum encryption, among other applications.

Date: 2024
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DOI: 10.1038/s41467-024-50586-5

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