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

doi:10.1088/1674-1056/ad8073

中国物理B ›› 2024, Vol. 33 ›› Issue (12): 120306-120306.doi: 10.1088/1674-1056/ad8073

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

Zhuo Fan(范灼)^1,2,†, Yi Shi(石逸)^1,3,†, Hang Wang(王航)^1,3, Yuan Zhao(赵元)^1,2, Wei Peng(彭微)^1,2,‡, and Siliu Xu(徐四六)^1,2,§

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

收稿日期:2024-07-29 修回日期:2024-09-16 接受日期:2024-09-27 发布日期:2024-11-29
通讯作者: Wei Peng, Siliu Xu E-mail:vivipw7958@163.com;xusiliu1968@163.com
基金资助:
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), and the Medical Project of Hubei University of Science and Technology (Grant No. 2023YKY08).

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

Zhuo Fan(范灼)^1,2,†, Yi Shi(石逸)^1,3,†, Hang Wang(王航)^1,3, Yuan Zhao(赵元)^1,2, Wei Peng(彭微)^1,2,‡, and Siliu Xu(徐四六)^1,2,§

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

Received:2024-07-29 Revised:2024-09-16 Accepted:2024-09-27 Published:2024-11-29
Contact: Wei Peng, Siliu Xu E-mail:vivipw7958@163.com;xusiliu1968@163.com
Supported by:
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), and the Medical Project of Hubei University of Science and Technology (Grant No. 2023YKY08).

摘要/Abstract

摘要： We propose an approach for generating robust two-dimensional (2D) vortex clusters (VCs) in a Rydberg atomic system by utilizing parity-time ($\mathcal{PT}$) symmetric optical Bessel potential. We show that the system supports novel multi-core 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 $\mathcal{PT}$-symmetric potentials but also pave the way for potential applications in optical information processing and transmission.

关键词: vortex clusters, $\mathcal{PT}$ symmetry, Bessel potential, Rydberg-Rydberg interaction

Abstract: We propose an approach for generating robust two-dimensional (2D) vortex clusters (VCs) in a Rydberg atomic system by utilizing parity-time ($\mathcal{PT}$) symmetric optical Bessel potential. We show that the system supports novel multi-core 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 $\mathcal{PT}$-symmetric potentials but also pave the way for potential applications in optical information processing and transmission.

Key words: vortex clusters, $\mathcal{PT}$ symmetry, Bessel potential, Rydberg-Rydberg interaction

中图分类号: (Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)

03.75.Lm

11.30.Er (Charge conjugation, parity, time reversal, and other discrete symmetries) 32.80.Ee (Rydberg states)

Zhuo Fan(范灼), Yi Shi(石逸), Hang Wang(王航), Yuan Zhao(赵元), Wei Peng(彭微), and Siliu Xu(徐四六). Vortex clusters and their active control in a cold Rydberg atomic system with PT-symmetric Bessel potential[J]. 中国物理B, 2024, 33(12): 120306-120306.

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

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

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