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可编程元表面的物理信息反向设计

Yucheng Xu^1,2, Jia-Qi Yang³, Kebin Fan^1,2

¹Research Institute of Superconductor Electronics (RISE) & Key Laboratory of Optoelectronic Devices and Systems with Extreme Performances of MOE, School of Electronic Science and Engineering, Nanjing University, Nanjing, 210023, China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|September 5, 2024

概括

研究人员为可编程元表面开发了一种基于物理的反向设计方法,增强了特拉赫兹束转向能力,具有更高的相调和设计精度. 这一突破加速了用于通信和成像的先进超表面设备的开发.

科学领域:

超表面和电磁波操纵.
太赫兹 (THz) 技术和应用.
先进的材料科学和设备工程.

背景情况:

可重新配置的超表面能够对电磁波进行编程控制,这对于太赫兹应用至关重要.
由于时间密集的前进设计方法,当前的超表面设计面临着可调和相调 (例如,<270°) 的限制.
增强的相调和光束方向是推进太赫兹通信和成像的关键.

研究的目的:

为了演示一个多位可编程的超表面,用于增强的太赫兹束转向.
引入物理知情反向设计 (PIID) 方法用于超表面设计.
为了克服与传统方法相关的相调和设计精度的局限性.

主要方法:

开发一个基于物理学的反向设计 (PIID) 算法,将修改合模式理论 (MCMT) 与残余神经网络集成在一起.
利用PIID在地表几何和电磁模式之间建立复杂的物理关系.
对反向设计的可编程光束转向元面的实验验证.

主要成果:

在不影响反射强度的情况下,实现了高达300°的增强相调.
演示了一种多位可编程的超表面,能够进行太赫兹束方向,偏向角度高达68°.
与传统的神经网络相比,PIID方法显著提高了设计精度,阐明了物理设计原则.

结论:

PIID方法为快速探索和设计先进的地表设备提供了一个有希望的途径.
展示的可编程光束转向元表面显示了各种编码方案 (1 位,2 位,三态) 的适应性.
这项工作将对未来的太赫兹通信和成像技术产生重大潜在影响.

关键词:

灯束转向的方向盘.深度学习是一种深度学习.逆向设计是一种逆向设计.可编程的地表表面.

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