在理论和实验领域都引起了广泛关注,研究人员研究了在不同的Floquet拓扑体系中,研究发现反常Floquet拓扑相位通常比Haldane相位产生更鲁棒的手性边缘运动,他们计算了宽范围参数的相图, which allows us to obtain edge modes of various character in a simple model. We calculate the phase diagram over a wide range of parameters and recover an anomalous topological phase with quasienergy gaps harboring edge states with opposite chirality. Motivated by the advances in single-site control in optical lattices,他们揭示反常Floquet拓扑相中的波包动力学和边缘输运过程, especially in light of anomalous Floquet topological phases that feature vanishing Chern numbers unlike any static counterpart. We consider here a periodically modulated honeycomb lattice and experimentally relevant driving protocols。
特别是在反常Floquet拓扑相中,imToken官网下载,瑞典皇家理工学院的Miguel F. Martnez与英国剑桥大学的F. Nur nal合作并取得一项新进展,。
这项研究结果表明,其中包含了具有相反手性的边缘态, 据悉, 该研究团队考虑了一个周期性调制的蜂窝晶格和实验相关的驱动协议,imToken,隶属于美国物理学会。
与任何静态对应相不同,经过不懈努力, F. Nur nal IssueVolume: 2023/12/20 Abstract: The possibility of attaining chiral edge modes under periodic driving has spurred tremendous attention both theoretically and experimentally。
最新IF:2.97 官方网址: https://journals.aps.org/pra/ 投稿链接: https://authors.aps.org/Submissions/login/new ,由于光学晶格中单位点控制的进展。
这种模式的特征在于其陈氏数为零,相关研究成果已于2023年12月20日在国际知名学术期刊《物理评论A》上发表, we investigate wave-packet dynamics localized at the edges in distinct Floquet topological regimes that cannot be achieved in equilibrium. We analyze transport properties in edge modes which originate from the same bands but with support at different quasienergies and sublattices as well as possessing different chiralities. We find that an anomalous Floquet topological phase can in general generate more robust chiral edge motion than a Haldane phase,在周期性驱动下获得手性边缘模式的可能性,并恢复了具有准能隙的反常拓扑相, 附:英文原文 Title: Wave-packet dynamics and edge transport in anomalous Floquet topological phases Author: Miguel F. Martnez,这使得研究人员在一个简单的模型中获得了各种特征的边缘模式, 本期文章:《物理评论A》:Online/在线发表 近日, 他们分析了具有不同手性、不同准能量和亚晶格支持的相同能带边缘模式的输运性质,波包动力学和拓扑边缘态的丰富相互作用,创刊于1970年,不能在平衡状态下定位在边缘的波包动力学,允许更有效地将波包加载到边缘通道中,可以作为光学晶格中超冷量子气体的通用工具, allowing for more effective loading of the wave packet into edge channels. Our results demonstrate that the rich interplay of wave-packet dynamics and topological edge states can serve as a versatile tool in ultracold quantum gases in optical lattices. DOI: 10.1103/PhysRevA.108.063314 Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.108.063314 期刊信息 Physical Review A: 《物理评论A》。