|
Anti-parity-time topologically undefined state
点击次数：
影响因子：0.0
DOI码：10.1088/1367-2630/ac4052
发表刊物：New Journal of Physics
关键字：undefined winding number, topological photonics, anti-parity-time symmetry
摘要：Researches on the topological edge state in the photonic lattice are attracting considerable attention. Here, we report the studies on a particular state for which the topological invariant is undefined. We constructed an anti-parity-time-symmetric photonic lattice by using the perturbation method. Light distributes only in the wide waveguides with equal magnitude for the state with undefined winding numbers. Further studies show that the equal intensity transmission is unaffected except for the defect site. Our work provides a new way to study the topological state and the equally divided light transmission and might be applicable in optical circuits and optical interconnect.
论文类型：期刊论文
学科门类：理学
一级学科：物理学
卷号：23
页面范围：123039
是否译文：否
收录刊物：SCI