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Optimal parameter combinations of entanglement in the general Heisenberg model |
| Da-Chuang Li(李大创)1,2, Wei-Wei Pan(潘维韦)1, Xing-Dong Zhao(赵兴东)3, and Xiao-Lan Zong(宗晓岚)1,† |
1 School of Physics and Materials Engineering, Hefei Normal University, Hefei 230601, China;
2 Key Laboratory of Quantum Information and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China;
3 School of Physics, Henan Normal University, Xinxiang 453007, China |
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Abstract Thermal entanglement, as influenced by interaction parameters, is investigated within the general Heisenberg $XYZ$ model. We calculate the relationship between entanglement and the system interaction parameters, including spin-spin interaction parameters (SSIPs) and spin-orbit interaction parameters (SOIPs). By considering various parameter orientations, we identify four optimal combinations of the SSIPs and find that the optimal vector of the spin-orbit interaction aligns with the coordinate axis corresponding to the maximal SSIP component. Furthermore, we obtain three effective optimal combinations of the SOIPs corresponding to the optimal SSIPs, which can maximize the system entanglement when the parameters are tuned accordingly. To demonstrate the feasibility of our results under realistic experimental conditions, we propose an optical lattice scheme with tunable parameters.
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Received: 22 April 2025
Revised: 16 June 2025
Accepted manuscript online: 07 July 2025
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PACS:
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03.65.Ud
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(Entanglement and quantum nonlocality)
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03.67.Bg
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(Entanglement production and manipulation)
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75.10.Jm
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(Quantized spin models, including quantum spin frustration)
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| Fund: This work was supported by the National Natural Science Foundation of China (Grant Nos. 11204061, 12204142, and 11904071), the Anhui Provincial Key Research and Development Project (Grant No. 2022b13020002), and the Outstanding Young Talents in College of Anhui Province (Grant No. gxyq2022059). |
Corresponding Authors:
Xiao-Lan Zong
E-mail: xlzong725@foxmail.com
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Cite this article:
Da-Chuang Li(李大创), Wei-Wei Pan(潘维韦), Xing-Dong Zhao(赵兴东), and Xiao-Lan Zong(宗晓岚) Optimal parameter combinations of entanglement in the general Heisenberg model 2025 Chin. Phys. B 34 100308
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