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

• Published in: Chinese physics letters Vol. 40; no. 4; pp. 44201 - 33
• Main Authors: Li, Bin-Bin, Zhao, Yuan, Xu, Si-Liu, Zhou, Qin, Fu, Qi-Dong, Ye, Fang-Wei, Hua, Chun-Bo, Chen, Mao-Wei, Hu, Heng-Jie, Zhou, Qian-Qian, Qiu, Zhang-Cai
• Format: Journal Article
• Language: English
• Published: Chinese Physical Society and IOP Publishing Ltd 01.04.2023; School of Biomedical Engineering and Medical Imaging,Xianning Medical College,Hubei University of Science and Technology,Xianning 437100,China; Laboratory of Optoelectronic Information and Intelligent Control,Hubei University of Science and Technology,Xianning 437100,China; Laboratory of Optoelectronic Information and Intelligent Control,Hubei University of Science and Technology,Xianning 437100,China%School of Biomedical Engineering and Medical Imaging,Xianning Medical College,Hubei University of Science and Technology,Xianning 437100,China; School of Electronic and Information Engineering,Hubei University of Science and Technology,Xianning 437100,China%School of Mathematical and Physical Sciences,Wuhan Textile University,Wuhan 430200,China%School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China%Laboratory of Optoelectronic Information and Intelligent Control,Hubei University of Science and Technology,Xianning 437100,China; School of Electronic and Information Engineering,Hubei University of Science and Technology,Xianning 437100,China
• ISSN: 0256-307X; 1741-3540
• DOI: 10.1088/0256-307X/40/4/044201

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.