论文标题
揭示拓扑费及其在电子电路中的操纵
Unveiling Topological Charges and Their Manipulation in Electronic Circuits
论文作者
论文摘要
在电磁系统响应中利用拓扑特性可以极大地提高其潜力。尽管在各种散射异常的背景下，近年来对基于奇异性的电磁学和非热电子电子的研究已大大增加，但尚未对其拓扑特性进行全面评估。在这项工作中，我们从理论上和实验上证明，连续体中结合状态周围的非甲动扰动可以导致散射矩阵的奇异性，这些矩阵在拓扑上是非平凡的，并且符合电荷保护。相关的散射矩阵杆，零和零零对描绘了极端散射事件，包括激光，一致的完美吸收和吸收激光剂。提出的框架使电路中的这些奇异点的生成，an灭和添加的配方具有极端散射工程的潜力，可在广泛的电磁频谱上进行传感，无线功率传递，激光和热发射设备。
Leveraging topological properties in the response of electromagnetic systems can greatly enhance their potential. Although the investigation of singularity-based electromagnetics and non-Hermitian electronics has considerably increased in recent years in the context of various scattering anomalies, their topological properties have not been fully assessed. In this work, we theoretically and experimentally demonstrate that non-Hermitian perturbations around bound states in the continuum can lead to singularities of the scattering matrix, which are topologically nontrivial and comply with charge conservation. The associated scattering matrix poles, zeros and pole-zero pairs delineate extreme scattering events, including lasing, coherent perfect absorption, and absorber-lasers. The presented framework enables a recipe for generation, annihilation and addition of these singularities in electric circuits, with potential for extreme scattering engineering across a broad range of the electromagnetic spectrum for sensing, wireless power transfer, lasing and thermal emission devices.
