Gap solitons in parity-time symmetric moiré optical lattices
文献类型：预印本
| 作者 | Liu, Xiuye1,2; Zeng, Jianhua1,2 |
| 英文摘要 | Parity-time (PT) symmetric lattices have been widely studied in controlling the flow of waves, and recently moiré superlattices, connecting the periodic and non-periodic potentials, are introduced for exploring unconventional physical properties in physics; while the combination of both and nonlinear waves therein remains unclear. Here, we report a theoretical survey of nonlinear wave localizations in PT symmetric moiré optical lattices, with the aim of revealing localized gap modes of different types and their stabilization mechanism. We uncover the formation, properties, and dynamics of fundamental and higher-order gap solitons as well as vortical ones with topological charge, all residing in the finite band gaps of the underlying linear-Bloch wave spectrum. The stability regions of the localized gap modes are inspected in two numerical ways: linear-stability analysis and direct perturbed simulations. Our results provide an insightful understanding of solitons physics in combined versatile platforms of PT symmetric systems and moiré patterns. Copyright © 2022, The Authors. All rights reserved. |
| 出处 | arXiv |
| 出版者 | arXiv |
| ISSN号 | 23318422 |
| 发表日期 | 2022-06-22 |
| 语种 | 英语 |
| 产权排序 | 1 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/96055]  |
| 专题 | 西安光学精密机械研究所_瞬态光学技术国家重点实验室 |
| 作者单位 | 1.University of Chinese Academy of Sciences, Beijing; 100049, China 2.State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China; |
| 推荐引用方式 GB/T 7714 | Liu, Xiuye,Zeng, Jianhua. Gap solitons in parity-time symmetric moiré optical lattices. 2022. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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