论文标题
时间引起的二阶拓扑超导体
Time-induced second-order topological superconductors
论文作者
论文摘要
近年来，在其边界边界（铰链或角落）边界处具有拓扑保护状态的高阶拓扑材料近年来引起了人们的关注。在本文中，我们利用时间周期驾驶来从系统中产生二阶拓扑超导体，否则这些系统甚至不允许二阶拓扑表征。通过在时间域中固有地表现出非跨度绕组的周期性驱动器的设计，这是可能的。通过拓扑的相互作用在空间和时间维度上，非手续的主要模式可能会在系统角落出现，有时甚至与手性majorage模式共存。因此，我们的建议为以最小的系统复杂性及其在量子信息处理中的应用提供了一个独特的机会来浮动工程。
Higher-order topological materials with topologically protected states at the boundaries of their boundaries (hinges or corners) have attracted attention in recent years. In this paper, we utilize time-periodic driving to generate second-order topological superconductors out of systems which otherwise do not even allow second-order topological characterization. This is made possible by the design of the periodic drives which inherently exhibit nontrival winding in the time-domain. Through the interplay of topology in both spatial and temporal dimensions, nonchiral Majorana modes may emerge at the systems corners and sometimes even coexist with chiral Majorana modes. Our proposal thus presents a unique opportunity to Floquet engineering with minimal system complexity and its application in quantum information processing.
