Vortex clusters and their active control in a cold Rydberg atomic system with PT-symmetric Bessel potential  

作　　者：Zhuo Fan Yi Shi Hang Wang Yuan Zhao Wei Peng Siliu Xu 范灼;石逸;王航;赵元;彭微;徐四六(Key Laboratory of Optoelectronic Sensing and Intelligent Control,Hubei University of Science and Technology,Xianning 437100,China;School of Biomedical Engineering and 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)

机构地区：[1]Key Laboratory of Optoelectronic Sensing and Intelligent Control,Hubei University of Science and Technology,Xianning 437100,China [2]School of Biomedical Engineering and Imaging,Xianning Medical College,Hubei University of Science and Technology,Xianning 437100,China [3]School of Electronic and Information Engineering,Hubei University of Science and Technology,Xianning 437100,China

出　　处：《Chinese Physics B》2024年第12期180-186,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.62275075);the Science and Technology Research Program of the Education Department of Hubei Province,China(Grant No.B2022188);the Natural Science Foundation of Hubei Province,China(Grant No.2023AFC042);the Training Program of Innovation and Entrepreneurship for Undergraduates of Hubei Province,China(Grant No.S202210927003);the Medical Project of Hubei University of Science and Technology(Grant No.2023YKY08)。

摘　　要：We propose an approach for generating robust two-dimensional(2D)vortex clusters(VCs)in a Rydberg atomic system by utilizing parity-time(PT)symmetric optical Bessel potential.We show that the system supports novel multicore VCs with four and eight cores,corresponding to topological charges 2 and 4,respectively.The stability of these VCs can be dynamically adjusted through the manipulation of the gain-loss component,Kerr nonlinearities,and the degree of nonlocality inherent in the Rydberg atoms.These VCs are confined within the first lattice well of the Bessel potential,and both the power and width of lights undergo a quasi-periodic breathing phenomenon,which is attributed to the power exchange between the light fields and Bessel potential.Both self-attractive and self-repulsive Kerr interactions can sustain robust VCs within this system.The insights presented here not only facilitate the creation and manipulation of 2D VCs through PT-symmetric potentials but also pave the way for potential applications in optical information processing and transmission.

关 键 词：vortex clusters PT symmetry Bessel potential Rydberg-Rydberg interaction 

分 类 号：O562[理学—原子与分子物理]