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Intrinsic decoherence effects on quantum correlations dynamics

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Abstract

We investigate the influence of intrinsic decoherence on the quantum correlations in a two-qubit Heisenberg XYZ spin chain in the presence of the z-component of Dzyaloshinskii–Moriya interaction by employing logarithmic negativity and trace distance discord as reliable quantum correlation quantifiers. We highlight the dynamics behaviours of suggested quantifiers for a system initially prepared in the extended Werner-like state. For an initial separable state, it is found that the robustness and the generation of the quantum correlations depend on the physical parameters. While considering the entangled state as an initial state, the results show that despite the phase decoherence, all the correlations reach their steady state values after exhibiting some oscillations. We reveal that TDD is relatively more robust against the intrinsic decoherence compared to the logarithmic negativity and increasing the intrinsic decoherence rate leads to a drastic decrease of the quantum correlations between the two qubits.

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Essakhi, M., Khedif, Y., Mansour, M. et al. Intrinsic decoherence effects on quantum correlations dynamics. Opt Quant Electron 54, 103 (2022). https://doi.org/10.1007/s11082-021-03463-0

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