Matter-wave gap solitons and vortices of dense Bose-Einstein condensates in Moiré optical lattices
文献类型:期刊论文
作者 | Liu, Xiuye1,2; Zeng, Jianhua1,2 |
刊名 | CHAOS SOLITONS & FRACTALS |
出版日期 | 2023-09 |
卷号 | 174 |
ISSN号 | 0960-0779;1873-2887 |
关键词 | Gap solitons and vortex Cubic-quintic nonlinearity Nonlinear Schrodinger equation Bose-Einstein condensate Optical lattices |
DOI | 10.1016/j.chaos.2023.113869 |
产权排序 | 1 |
英文摘要 | Optical lattices provide a key enabling and controllable platform for exploring new physical phenomena and implications of degenerate quantum gases both in the quantum and nonlinear regimes. Based on the Gross- Pitaevskii/nonlinear Schrodinger equation with competing cubic-quintic nonlinearity, we show, numerically and theoretically, the nonlinear localization of dense Bose-Einstein condensates (BECs) in a novel two-dimensional twisted periodic potential called Moire optical lattices which, in essence, build a bridge between the perfect optical lattices and aperiodic ones. Our theory reveals that the Moire optical lattices display a wider second gap and flat-band feature, and support two kinds of localized matter-wave structures like gap solitons and topological states (gap vortices) with vortex charge s = 1, all populated inside the finite gaps of the linear Bloch-wave spectrum. We demonstrate, by means of linear-stability analysis and direct perturbed evolutions, that these localized structures have wide stability regions, paving the way for studying flat-band and Moire physics in shallow optical lattices and for finding robust coherent matter waves therein. The twisted periodic structures can be readily implemented with currently available optical-lattice technique in BECs and nonlinear optics experiments where the results predicted here are observable. |
语种 | 英语 |
出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
WOS记录号 | WOS:001073033300001 |
源URL | [http://ir.opt.ac.cn/handle/181661/96809] |
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 |
通讯作者 | Zeng, Jianhua |
作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Ctr Attosecond Sci & Technol, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China |
推荐引用方式 GB/T 7714 | Liu, Xiuye,Zeng, Jianhua. Matter-wave gap solitons and vortices of dense Bose-Einstein condensates in Moiré optical lattices[J]. CHAOS SOLITONS & FRACTALS,2023,174. |
APA | Liu, Xiuye,&Zeng, Jianhua.(2023).Matter-wave gap solitons and vortices of dense Bose-Einstein condensates in Moiré optical lattices.CHAOS SOLITONS & FRACTALS,174. |
MLA | Liu, Xiuye,et al."Matter-wave gap solitons and vortices of dense Bose-Einstein condensates in Moiré optical lattices".CHAOS SOLITONS & FRACTALS 174(2023). |
入库方式: OAI收割
来源:西安光学精密机械研究所
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