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Manipulation of gray-ring dark solitons in a two-component Bose gas with tunable soft-core interactions |
| Qiu-Ling He(何秋玲)1, Lin-Xue Wang(王林雪)1, Rui Jin(金瑞)1, Fang Wang(王芳)1, Ya-Jun Wang(王雅君)2, and Xiao-Fei Zhang(张晓斐)1,† |
1 School of Physics and Information Science, Shaanxi University of Science and Technology, Xi'an 710021, China;
2 Department of Basic Sciences, Air Force Engineering University, Xi'an 710051, China |
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Abstract We explore the manipulation of gray-ring dark solitons in a two-component Bose gas with tunable soft-core interactions through numerical simulations of the time-dependent Gross-Pitaevskii equation. Our results demonstrate that the lifetime of gray solitons with periodically modulated soft-core interactions significantly depends on their initial depth. Specifically, shallower initial depths lead to longer lifetimes when exceeding a critical depth threshold. Furthermore, the soliton depth also governs the number and dynamic of vortex pairs resulting from the collapse of the ring dark soliton. These depth-dependent topological transformations open new perspectives for quantum manipulation.
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Received: 21 March 2025
Revised: 06 May 2025
Accepted manuscript online: 23 May 2025
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PACS:
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03.75.Hh
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(Static properties of condensates; thermodynamical, statistical, and structural properties)
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67.85.-d
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(Ultracold gases, trapped gases)
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67.85.De
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(Dynamic properties of condensates; excitations, and superfluid flow)
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75.10.-b
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(General theory and models of magnetic ordering)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 12175129, 12475004, 12175027, and 12005125), the Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (Grant No. ZDBSLY7016), the Shaanxi Fundamental Science Research Project for Mathematics and Physics (Grant No. 22JSY034), the Key Research and Development Projects of Shaanxi Province, China (Grant No. 2024GX-YBXM-564), the Scientific Research Program Funded by Shaanxi Provincial Education Department (Grant No. 23JP020), and the Youth Innovation Team of Shaanxi Universities. |
Corresponding Authors:
Xiao-Fei Zhang
E-mail: xfzhang@sust.edu.cn
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Cite this article:
Qiu-Ling He(何秋玲), Lin-Xue Wang(王林雪), Rui Jin(金瑞), Fang Wang(王芳), Ya-Jun Wang(王雅君), and Xiao-Fei Zhang(张晓斐) Manipulation of gray-ring dark solitons in a two-component Bose gas with tunable soft-core interactions 2025 Chin. Phys. B 34 100306
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