论文标题
谐振波散射中边缘状态的签名
Signature of edge states in resonant wave scattering
论文作者
论文摘要
粒子梁散射是一种用于检测物质性质的常规技术。我们研究了连接到多个导线的群集的散射问题。我们建立了拓扑散射中心的本征状态与共振散射过程的传输和反射幅度之间的联系。我们发现，作为一种应用，这种方法可以在遗传学和非铁官系统中检测到频带差距中的边缘状态，并识别系统的拓扑结构。我们研究了两种类型的Su-Schrieffer-Heeger链作为例子。此外，我们通过evanescyly耦合波导阵列提出了动态方案，以根据测量的传输强度检测边缘状态。数值模拟表明，模式可见性可以是边缘状态的签名。
Particle beam scattering is a conventional technique for detecting the nature of matter. We studied the scattering problem of a cluster connected to multiple leads. We established the connection between the eigenstate of the topological scattering center and the transmission and reflection amplitudes for the resonant scattering process. We discovered that as an application, this approach enables the detection of the edge state in the band gap for both Hermitian and non-Hermitian systems and the identification of the topology of a system. We investigated two types of Su-Schrieffer-Heeger chains as examples. In addition, we proposed a dynamic scheme through an evanescently coupled-waveguide array to detect the edge state on the basis of measured transmission intensity. Numerical simulation revealed that pattern visibility can be the signature of the edge states.
