Nonlinear localized modes in one-dimensional nanoscale dark-state optical lattices | |
Chen, Zhiming2,3,4; Zeng, Jianhua1,4 | |
刊名 | Nanophotonics |
关键词 | Bose–Einstein condensation gap solitons nanoscale dark-state optical lattices three-level atomic system |
ISSN号 | 21928614 |
DOI | 10.1515/nanoph-2022-0213 |
产权排序 | 1 |
英文摘要 | Optical lattices (OLs) with conventional spatial periodic λ/2, formed by interfering the counterpropagating laser beams with wavelength λ, are versatile tools to study the dynamical and static properties of ultracold atoms. OLs with subwavelength spatial structure have been realized in recent quantum-gas experiment, offering new possibility for nonlinear and quantum control of ultracold atoms at the nano scale. Herein, we study theoretically and numerically the formation, property, and dynamics of matter-wave localized gap modes of Bose-Einstein condensates loaded in a one-dimensional nanoscale dark-state OL consisted of an array of optical subwavelength barriers. The nonlinear localized modes, in the forms of on- and off-site fundamental gap solitons, and dipole ones, are demonstrated; and we uncover that, counterintuitively, these modes exhibit always a cusplike (side peaks) mode even for a deeply subwavelength adiabatic lattice, contrary to the previously reported results in conventional deep OLs where the localized gap modes are highly confined in a single lattice cell. The (in)stability features of all the predicted localized modes are verified through the linear-stability analysis and direct perturbed simulations. Our predicted results are attainable in current ultracold atoms experiments with the cutting-edge technique, pushing the nonlinear control of ultracold atoms with short-period OLs as an enabling technology into subwavelength structures. © 2022 Zhiming Chen et al., published by De Gruyter, Berlin/Boston 2022. |
语种 | 英语 |
出版者 | De Gruyter Open Ltd |
内容类型 | 期刊论文 |
源URL | [http://ir.opt.ac.cn/handle/181661/96042] |
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.University of Chinese Academy of Sciences, Beijing; 100049, China 2.Collaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan; 250358, China; 3.School of Science, East China University of Technology, Nanchang; 330013, China; 4.State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; 710119, China; |
推荐引用方式 GB/T 7714 | Chen, Zhiming,Zeng, Jianhua. Nonlinear localized modes in one-dimensional nanoscale dark-state optical lattices[J]. Nanophotonics. |
APA | Chen, Zhiming,&Zeng, Jianhua. |
MLA | Chen, Zhiming,et al."Nonlinear localized modes in one-dimensional nanoscale dark-state optical lattices".Nanophotonics |
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