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Dynamical pairwise entanglement and two-point correlations in the three-ligand spin-star structure

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  • Motamedifar, M.

Abstract

We consider the three-ligand spin-star structure through homogeneous Heisenberg interactions (XXX-3LSSS) in the framework of dynamical pairwise entanglement. It is shown that the time evolution of the central qubit “one-particle” state (COPS) brings about the generation of quantum W states at periodical time instants. On the contrary, W states cannot be generated from the time evolution of a ligand “one-particle” state (LOPS). We also investigate the dynamical behavior of two-point quantum correlations as well as the expectation values of the different spin-components for each element in the XXX-3LSSS. It is found that when a W state is generated, the same value of the concurrence between any two arbitrary qubits arises from the xx and yy two-point quantum correlations. On the opposite, zz quantum correlation between any two qubits vanishes at these time instants.

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  • Motamedifar, M., 2017. "Dynamical pairwise entanglement and two-point correlations in the three-ligand spin-star structure," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 483(C), pages 280-292.
    • Handle: RePEc:eee:phsmap:v:483:y:2017:i:c:p:280-292
    DOI: 10.1016/j.physa.2017.04.007
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    References listed on IDEAS

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    Cited by:

    1. Motamedifar, Mostafa, 2021. "Entanglement dynamics and fractional quantum state transport in the spin-12 triangular plaquette," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 568(C).

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