论文标题
观察强大的零能量扩展状态
Observation of Robust Zero Energy Extended States
论文作者
论文摘要
拓扑边缘状态出现在两个拓扑结构的结构的界面上，并且具有两个不同的特征：它们局部且可靠地抵抗对称性保护障碍。另一方面，一个维度的常规运输与扩展状态相关联，通常没有拓扑稳定性。在本文中，使用有损耗的耦合谐振器在一个维度上，我们在理论上和实验上都证明了存在于大容量中的稳健状态的存在。我们表明，在相邻站点和损失之间的耦合中，它们对疾病异常强大。我们的工作铺平了一种新形式的强大运输方式，该方式不仅限于边界现象，并且可以从远处更容易访问。
Topological edge states arise at the interface of two topologically-distinct structures and have two distinct features: they are localized and robust against symmetry protecting disorder. On the other hand, conventional transport in one dimension is associated with extended states, which typically do not have topological robustness. In this paper, using lossy coupled resonators in one dimension, we demonstrate both theoretically and experimentally the existence of robust states residing in the bulk. We show that they are unusually robust against disorders in coupling between adjacent sites and losses. Our work paves the way to a new form of robust transport that is not limited to boundary phenomena and can be accessed more easily from far field.
