Study the Entanglement Dynamics of an Anisotropic Two-Qubit Heisenberg XYZ System in a Magnetic Field

• 作者: A. R. Mohammed T. M. El-Shahat
• 来源期刊: 量子信息科学期刊(英文)
• 学科: 物理学
• 关键词: Different Dzyaloshinski-Moriya Interactions ENTANGLEMENT DECOHERENCE
• 年，卷（期）: 2017,（4）
• 页码范围: 160-171
• 页数: 12页
• 分类号: O41

摘要

We investigate the entanglement dynamics of an anisotropic two-qubit Heisenberg XYZ system with Dzyaloshinskii-Moriya (DM) interaction in the presence of both inhomogeneity of the external magnetic field b and intrinsic decoherence which has been studied. The behavior of quantum correlation and the degree of entanglement between the two subsystems is quantified by using measurement-induced disturbance (MID), negativity (N) and Quantum Discord (QD), respectively. It is shown that in the presence of an inhomogeneity external magnetic field occur the phenomena of long-lived entanglement. It is found that the initial state is the essential role in the time evolution of the entanglement.