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Quantum Correlation via Skew Information and Bell
Function Beyond Entanglement in a Two-Qubit
Heisenberg XYZ Model: Effect of the Phase Damping

Research Authors
Abdel-Baset A. Mohamed
Ahmed Farouk
Mansour F. Yassen
Hichem Eleuch
Research Abstract

In this paper, we analyze the dynamics of non-local correlations (NLCs) in an anisotropic
two-qubit Heisenberg XYZ model under the effect of the phase damping. An analytical solution is
obtained by applying a method based on the eigenstates and the eigenvalues of the Hamiltonian.
It is observed that the generated NLCs are controlled by the Dzyaloshinskii–Moriya interaction,
the purity indicator, the interaction with the environment, and the anisotropy. Furthermore, it is
found that the quantum correlations, as well as the sudden death and sudden birth phenomena,
depend on the considered physical parameters. In particular, the system presents a special correlation:
the skew-information correlation. The log-negativity and the uncertainty-induced non-locality
exhibit the sudden-change behavior. The purity of the initial states plays a crucial role on the
generated nonlocal correlations. These correlations are sensitive to the DM interaction, anisotropy,
and phase damping.

Research Department
Research Journal
Applied Sciences
Research Member
Research Publisher
MDPI
Research Rank
1
Research Vol
10
Research Website
https://www.mdpi.com/2076-3417/10/11/3782
Research Year
2020
Research Pages
3782