Decoherence Effects on Local Quantum Fisher Information and Quantum Coherence in a Spin‐1/2 $1/2$ Ising‐XYZ $XYZ$ ChainDecoherence Effects on Local Quantum Fisher Information and Quantum Coherence in a Spin‐1/2$1/2$ Ising‐XYZ$XYZ$ Chain

Hector Leny Carrion, Onofre Rojas, Cleverson Filgueiras +1 more

Abstract This research explores the effects of decoherence on local quantum Fisher information and quantum coherence dynamics in a spin‐1/2 Ising‐XYZ chain model with independent reservoirs at zero temperature. Contrasting these effects with those in the spin‐1/2 Heisenberg XYZ model reveals intricate interactions among quantum coherence, entanglement, and environmental decoherence in spin systems. Analysis of coherence dynamics highlights differences between the original and hybrid models, showcasing increased entanglement due to Ising interactions alongside reduced coherence from environmental redistribution. proves more resilient than coherence in specific scenarios, emphasizing decoherence's varying impacts on quantum correlations. This research underscores the complexity of quantum coherence dynamics and the crucial role of environmental factors in shaping quantum correlations, providing insights into entanglement and coherence behavior under environmental influences and guiding future studies in quantum information processing and correlation dynamics.Abstract This research explores the effects of decoherence on local quantum Fisher information and quantum coherence dynamics in a spin‐1/2 Ising‐XYZ chain model with independent reservoirs at zero temperature. Contrasting these effects with those in the spin‐1/2 Heisenberg XYZ model reveals intricate interactions among quantum coherence, entanglement, and environmental decoherence in spin systems. Analysis of coherence dynamics highlights differences between the original and hybrid models, showcasing increased entanglement due to Ising interactions alongside reduced coherence from environmental redistribution. proves more resilient than coherence in specific scenarios, emphasizing decoherence's varying impacts on quantum correlations. This research underscores the complexity of quantum coherence dynamics and the crucial role of environmental factors in shaping quantum correlations, providing insights into entanglement and coherence behavior under environmental influences and guiding future studies in quantum information processing and correlation dynamics.

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Quantum Discord Behavior about Two-Qubit Heisenberg XYZ Model with Decoherence

Le Song, Guo-Hui Yang

We investigate the properties of quantum discord dynamics of a two-qubit Heisenberg XYZ system which is influenced by the environmental decoherence under an external nonuniform magnetic field. It shows that the influence of the parameters on the system heavily rely on the selection of the initial states. One point shows that the environmental decoherence cannot entirely destroy the quantum correlation, and properly controlling the parameters can inhibit the decoherence. Moreover, it presents that the inhomogeneous magnetic field cannot affect the steady quantum discord (QD), while the uniform magnetic field and the anisotropy coupling constant will change the steady QD. These investigations imply that one can obtain larger steady QD values by reasonably adjusting parameters on quantum correlation in solid state systems.We investigate the properties of quantum discord dynamics of a two-qubit Heisenberg XYZ system which is influenced by the environmental decoherence under an external nonuniform magnetic field. It shows that the influence of the parameters on the system heavily rely on the selection of the initial states. One point shows that the environmental decoherence cannot entirely destroy the quantum correlation, and properly controlling the parameters can inhibit the decoherence. Moreover, it presents that the inhomogeneous magnetic field cannot affect the steady quantum discord (QD), while the uniform magnetic field and the anisotropy coupling constant will change the steady QD. These investigations imply that one can obtain larger steady QD values by reasonably adjusting parameters on quantum correlation in solid state systems.

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Jeanne M. Riga, Craig C. Martens

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Intrinsic decoherence effects on quantum correlations dynamics

M. Essakhi, Youssef Khedif, Mostafa Mansour +1 more

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Decoherence Effects on Local Quantum Fisher Information and Quantum Coherence in a Spin‐1/2

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