Multi-Channel Amplitude-Phase Asymmetric-Encrypted Janus Acoustic Meta-Holograms
Abstract
Encrypted optical and acoustic meta-holograms only focus on the encrypted hologram in a single channel, viz. modulating spatial amplitude to project a holographic image. In this research, the unique concept of multi-channel amplitude-phase asymmetric-encrypted Janus acoustic meta-holograms is proposed, demonstrating remarkable capabilities of generating, encrypting, and decrypting both amplitude and phase holographic images on both sides of a metascreen. The flexible and decoupled manipulation mechanism for the amplitude-phase of the bidirectional acoustic waves used in our concept offers multiple possibilities to apply various encryption methods. In this work, our system enables single-input, two-faced four-channel asymmetric encryption, which substantially increase the communication capacity of conventional acoustic holograms, and establish a security framework based on mathematical problem, proving its security. Our work can lead to concrete applications including, but not limited to, multi-channel acoustic field communications and acoustic illusion and cloaking in non-transparent media.
Keywords
Cite
@article{arxiv.2510.05789,
title = {Multi-Channel Amplitude-Phase Asymmetric-Encrypted Janus Acoustic Meta-Holograms},
author = {Haohan Zeng and Zhenyu He and Tianxiang Zhang and Xiao Guo and Xinghao Hu and Youyu Mo and Tingting Li and Feilong Mao and Haiyan Fan and Xudong Fan and Weiwei Kan and Yifan Zhu and Hui Zhang and Guodong Yin and Badreddine Assouar},
journal= {arXiv preprint arXiv:2510.05789},
year = {2025}
}