论文标题
通过拓扑结构的琐碎状态填充和探测受保护的边缘状态
Populating and probing protected edge states through topology-entailed trivial states
论文作者
论文摘要
拓扑绝缘子可以使非转录光传播对疾病和不完美不敏感。然而，尽管光子学界及其他地区的广泛关注，但启发了众多拓扑运输应用建议的功能也是实践实施的主要绊脚石之一：访问受拓扑保护的状态通常被认为需要提高其保护。我们通过拓扑输入的琐事（TET）来克服这一限制，该限制是由反传播界面状态的杂交引起的。我们证明了将光的选择性注入和提取到拓扑状态以及空间分离的拓扑通道之间的远程相干光交换。我们的结果强调了TET状态作为保护拓扑平台中光流的潜力。
Topological insulators enable non-reciprocal light propagation that is insensitive to disorder and imperfections. Yet, despite considerable attention from the photonics community and beyond, the very feature that has inspired numerous proposals for applications of topological transport also turns out to be one of the main stumbling blocks for practical implementations: Accessing topologically protected states is generally assumed to require their protection to be lifted. We overcome this limitation by topology-entailed trivial (TET) states that arise from the hybridization of counter-propagating interface states. We demonstrate selective injection and extraction of light into topological states as well as long-range coherent light exchange between spatially separated topological channels. Our results highlight the potential of TET states as protection-preserving paradigm to manipulate the flow of light in topological platforms.
