光晶格作用下里德伯冷原子系统中的二维空间光孤子

实现高维光孤子是非线性光学研究中一个长期的目标.本文设计了一个里德伯冷原子与贝塞尔晶格势耦合的系统,发现了一系列稳定的二维空间光孤子簇,包括基极孤子、二级孤子、四级孤子和涡旋孤子.研究表明,光传播系数、非局域非线性系数、贝塞尔晶格常数可以用来调控光孤子的产生、空间分布及演化;在系统参数的调控下,该光孤子簇具备空间稳定性,能够在一定距离内稳定传播.本研究为高维空间光孤子的产生和调控提供了一种新的思路.     

Two-Dimensional Gap Solitons in Parity-Time Symmetry Moiré Optical Lattices with Rydberg–Rydberg Interaction

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 tun...