Two-Dimensional Gap Solitons in Parity-Time Symmetry Moiré Optical Lattices with Rydberg–Rydberg Interaction
Bin-Bin Li1,2† , Yuan Zhao1,2† , Si-Liu Xu1,2,3* , Qin Zhou4 , Qi-Dong Fu5 , Fang-Wei Ye5* , Chun-Bo Hua2,3 , Mao-Wei Chen1,2 , Heng-Jie Hu2,3 , Qian-Qian Zhou2,3 , and Zhang-Cai Qiu2,3
1 School of Biomedical Engineering and Medical Imaging, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China2 Laboratory of Optoelectronic Information and Intelligent Control, Hubei University of Science and Technology, Xianning 437100, China3 School of Electronic and Information Engineering, Hubei University of Science and Technology, Xianning 437100, China4 School of Mathematical and Physical Sciences, Wuhan Textile University, Wuhan 430200, China5 School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
Abstract ：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.
收稿日期: 2023-02-17
Editors' Suggestion
出版日期: 2023-03-29
:
42.50.Md
(Optical transient phenomena: quantum beats, photon echo, free-induction decay, dephasings and revivals, optical nutation, and self-induced transparency)
94.05.Fg
(Solitons and solitary waves)
32.80.Ee
(Rydberg states)
42.30.Ms
(Speckle and moiré patterns)
引用本文:
. [J]. 中国物理快报, 2023, 40(4): 44201-.
链接本文:
https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/40/4/044201
或
https://cpl.iphy.ac.cn/CN/Y2023/V40/I4/44201
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2023, Vol. 40 
