Tunable disorder-engineered materials offer the opportunity to add functionalities for finely tailored dynamic wave control to applications inevitably or voluntarily based on random materials. An exciting prospect are tailored channel matrices that optimally multiplex information on multiple incoming spatial channels across multiple spatial or configurational channels on the receive side. Here, the first demonstration of the latter is reported at microwave frequencies based on a chaotic cavity equipped with tunable reflect-array metasurfaces that are configured using a judiciously tailored coding sequence. The results have immediate technological relevance in computational imaging and sensing, since they enable the single-port acquisition of large-aperture spatial information with the lowest possible latency and processing burden. A reduction of the necessary number of measurements by a factor of 2.5 compared to state-of-the-art approaches is found in in-situ experiments. The proposed concept and platform set the stage for “on-demand” realizations of desired channel matrix properties and provide fundamental insights into the role of engineered disorder on the interplay of different types of degrees of freedom in mesoscopic physics. The principle is also expected to inspire novel multimode-fiber-based tailored-multiplexing schemes in the optical domain.

中文翻译：

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跨表面可调混沌腔的自定义配置的空间编码信息的最佳复用

可调谐的无序工程材料提供了机会，以随机材料为基础，不可避免地或自愿地为精细调整的动态波控制添加功能。定制信道矩阵是一个令人兴奋的前景，它可以在接收方的多个空间或配置信道上以最佳方式多路复用多个传入空间信道上的信息。在这里，后者的首次演示是在微波频率上进行的，该频率基于一个配备有可调谐反射阵列超表面的混沌腔，该腔使用明智地定制的编码序列进行配置。这些结果在计算成像和传感中具有直接的技术意义，因为它们能够以最小的延迟和处理负担实现单端口大口径空间信息的获取。在现场实验中发现，与最新方法相比，必要的测量数量减少了2.5倍。所提出的概念和平台为所需的信道矩阵属性的“按需”实现奠定了基础，并为工程无序在介观物理中不同类型的自由度相互作用的作用提供了基本见识。该原理也有望激发光域中新颖的基于多模光纤的定制复用方案。所提出的概念和平台为实现所需通道矩阵属性的“按需”实现奠定了基础，并为工程无序在介观物理学中不同类型的自由度相互作用上的作用提供了基本见识。预计该原理还将激发光域中新颖的基于多模光纤的定制复用方案。所提出的概念和平台为实现所需通道矩阵属性的“按需”实现奠定了基础，并为工程无序在介观物理学中不同类型的自由度相互作用上的作用提供了基本见识。该原理也有望激发光域中新颖的基于多模光纤的定制复用方案。