Realizing single light solitons that are stable in high dimensions is a long-standing goal in research of nonlinear optical physics.Here,we address a scheme to generate stable two-dimensional solitons in a cold Rydber...Realizing single light solitons that are stable in high dimensions is a long-standing goal in research of nonlinear optical physics.Here,we address a scheme to generate stable two-dimensional solitons in a cold Rydberg atomic system with a parity-time(PT) symmetric moiré optical lattice.We uncover the formation,properties,and their dynamics of fundamental and two-pole gap solitons as well as vortical ones.The PT symmetry,lattice strength,and the degrees of local and nonlocal nonlinearity are tunable and can be used to control solitons.The stability regions of these solitons are evaluated in two numerical ways:linear-stability analysis and time evolutions with perturbations.Our results provide an insightful understanding of solitons physics in combined versatile platforms of PT-symmetric systems and Rydberg–Rydberg interaction in cold gases.展开更多
莫尔晶格是指两个相同或者相似的周期结构重叠形成的复合结构。受二维材料中范德华尔斯(van der Waals)异质结形成的莫尔超晶格研究的影响,光学、声学、力学、热学领域中莫尔晶格的研究也相继重拾热情或不断涌现。本文主要回顾了光学莫...莫尔晶格是指两个相同或者相似的周期结构重叠形成的复合结构。受二维材料中范德华尔斯(van der Waals)异质结形成的莫尔超晶格研究的影响,光学、声学、力学、热学领域中莫尔晶格的研究也相继重拾热情或不断涌现。本文主要回顾了光学莫尔晶格的研究进展,包括构成莫尔晶格的两个周期结构在空间上处于同层的单层莫尔晶格结构和处于不同层的双层莫尔晶格结构,讨论了由不同材料、不同形式构成的各类光学莫尔结构的线性和非线性光学特性。展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.62275075,11975172,and 12261131495)the Shanghai Outstanding Academic Leaders Plan (Grant No.20XD1402000)the Training Program of Innovation and Entrepreneurship for Undergraduates of Hubei Province (Grant No.S202210927036)。
文摘Realizing single light solitons that are stable in high dimensions is a long-standing goal in research of nonlinear optical physics.Here,we address a scheme to generate stable two-dimensional solitons in a cold Rydberg atomic system with a parity-time(PT) symmetric moiré optical lattice.We uncover the formation,properties,and their dynamics of fundamental and two-pole gap solitons as well as vortical ones.The PT symmetry,lattice strength,and the degrees of local and nonlocal nonlinearity are tunable and can be used to control solitons.The stability regions of these solitons are evaluated in two numerical ways:linear-stability analysis and time evolutions with perturbations.Our results provide an insightful understanding of solitons physics in combined versatile platforms of PT-symmetric systems and Rydberg–Rydberg interaction in cold gases.
文摘莫尔晶格是指两个相同或者相似的周期结构重叠形成的复合结构。受二维材料中范德华尔斯(van der Waals)异质结形成的莫尔超晶格研究的影响,光学、声学、力学、热学领域中莫尔晶格的研究也相继重拾热情或不断涌现。本文主要回顾了光学莫尔晶格的研究进展,包括构成莫尔晶格的两个周期结构在空间上处于同层的单层莫尔晶格结构和处于不同层的双层莫尔晶格结构,讨论了由不同材料、不同形式构成的各类光学莫尔结构的线性和非线性光学特性。
