论文标题
零维结合状态的拓扑声音泵送
Topological sound pumping of zero-dimensional bound states
论文作者
论文摘要
拓扑阶段刺激了空前的声音，光和物质工程的能力，并且最近的进步表明，波浪不仅局限于拓扑上不同的绝缘子之间的接口，而且以零维的非偏向状态的形式限制在与缺陷或拐角处绑定在一起。最近在人造的kekulé纹理晶格中观察到了类似少校的界限。我们在这里展示了相关的Jackiw-Rossi Vortex的声学版本如何体现一个无与伦比的抽水过程，其中角状态的光谱与所述的Majorana样状态合并。此外，我们争辩说，kekulé涡流的手性如何另外映射到包括空间分离的声音热点的2D量子壁系统中。我们预见，我们的发现应该提供新颖的异国情调工具，以实现当代对声音的控制。
Topological phases have spurred unprecedented abilities for sound, light and matter engineering and recent progress has shown how waves not only confine at the interfaces between topologically distinct insulators, but in the form of zero-dimensional non-propagating states bound to defects or corners. Majorana-like bound states have recently been observed in man-made Kekulé textured lattices. We show here how the acoustic version of the associated Jackiw-Rossi vortex embodies a Thouless pumping process, in which the spectral flow of corner states adiabatically merge with the said Majorana-like state. Moreover, we argue how the chirality of the Kekulé vortex additionally maps into a 2D quantum-Hall system comprising spatially separated sonic hotspots. We foresee that our findings should provide novel exotic tools to enable contemporary control over sound.
