外加磁场下四量子位XXZ海森堡模型的量子相关动力学

IF 4.4 2区物理与天体物理 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Results in Physics Pub Date : 2025-04-30 DOI:10.1016/j.rinp.2025.108286

Su-Bok Ri, Gwang-Jin Kim, Ha Kim, Hyok Pak

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引用次数: 0

摘要

本文讨论了四量子位XXZ海森堡模型中的量子相关（量子纠缠和几何量子不和谐）。本文主要研究了均匀磁场对反铁磁性情况下量子相关动力学的影响。结果表明，均匀磁场对量子相关动力学的影响取决于初始态的选择。此外，与量子纠缠相比，几何量子不和谐表现出更强的鲁棒性。随着纯度参数的减小，量子相关的最大值减小，量子纠缠猝死的持续时间变长，交换相互作用对量子相关的动力学有实质性的影响。

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Dynamics of quantum correlations in four-qubit XXZ Heisenberg model with external magnetic field

In this paper we argue about the quantum correlation (quantum entanglement and geometric quantum discord) in four-qubit XXZ Heisenberg Model. Here, the influence of uniform magnetic field on the dynamics of quantum correlation in cases of the antiferromagnetism has been mainly investigated. According to the results, it has been illustrated that the role of the uniform magnetic field on the dynamics of quantum correlation depends on the selection of the initial state. Furthermore, geometric quantum discord exhibits greater robustness compared to quantum entanglement. Also results show that the max values of quantum correlations decrease and the duration of quantum entanglement sudden death gets longer as purity parameter decreases, and that exchange interaction can substantially make an effect on the dynamics of the quantum correlation.

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来源期刊

Results in Physics MATERIALS SCIENCE, MULTIDISCIPLINARYPHYSIC-PHYSICS, MULTIDISCIPLINARY

CiteScore

8.70

自引率

9.40%

发文量

754

审稿时长

50 days

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