基于Angular momentum的拓扑传输及其在传输线网络中的实验实现
Angular momentum-dependent topological transport and its experimental realization using a transmission line network
摘要：
量子自旋霍尔效应的新的经典波动现象类似物大多基于赝自旋的构造。在这里，我们表明，一个系统的非平凡的拓扑结构也可以实现使用轨道角动量通过角动量轨道耦合。该想法通过紧束缚模型进行了说明，并通过传输线网络进行了实验验证。我们的实验表明，即使是一个非常小的网络集群表现出单向的拓扑边缘状态，和他们的属性可以描述在本地陈数。我们的工作提供了一种新的机制来实现量子自旋霍尔效应在经典波中的对应物，并可能为其他系统提供见解。
英文摘要：
Novel classical wave phenomenon analogs of the quantum spin Hall effect are mostly based on the construction of pseudo-spins. Here we show that the non-trivial topology of a system can also be realized using orbital angular momentum through angular-momentum-orbital coupling. The idea is illustrated with a tight-binding model and experimentally demonstrated with a transmission line network. We show experimentally that even a very small network cluster exhibits one-way topological edge states, and their properties can be described in terms of local Chern numbers. Our work provides a new mechanism to realize counterparts of the quantum spin Hall effect in classical waves and may offer insights for other systems.
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