Dynamics of quantum correlation in three-qubit Heisenberg XXZ model with impurity site under nonuniform magnetic field

Su-Bok Ri, Gwang-Jin Kim, Ha Kim and Nam-Chol Ho

Physica A: Statistical Mechanics and its Applications, 2025, vol. 674, issue C

Abstract: In this paper, we have studied on the controllability and dynamics of the quantum correlation, that is, geometric quantum discord and quantum entanglement, in three-qubit Heisenberg XXZ model with impurity site in a nonuniform external magnetic field. Here, we consider the effects of the nonuniform external magnetic field, impurity parameter, exchange interaction J,Jzand Dzyaloshinskii –Moriya(DM) interaction D on the quantum correlations and their dynamical behavior for the case of the antiferromagnet. The results show that the quantum correlations can be sufficiently controlled, and that their dynamic behavior shows sudden death and birth under the influence of nonuniform part bof the magnetic field, impurity parameter, purity parameter, Dzyaloshinskii –Moriya interaction D, exchange interactionJ,Jz. Also, it shows that the influences of the various parameters on the dynamics of quantum correlations depend on a choice of initial state and the nonuniform part of magnetic field plays an essential role in the quantum correlation and it`s dynamics.

Keywords: Quantum entanglement; Geometric quantum discord; Dynamics; Concurrence; Time evolution (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:674:y:2025:i:c:s0378437125003838

DOI: 10.1016/j.physa.2025.130731

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