Dynamics of Global Entanglement under Decoherence

Abstract

We investigate the dynamics of global entanglement, the Meyer-Wallach measure, under decoherence, analytically. We study two important class of multi-partite entangled states, the Greenberger-Horne-Zeilinger and the W state. We obtain exact results for various models of system-environment interactions (decoherence). Our results shows distinctly different scaling behavior for these initially entangled states indicating a relative robustness of the W state, consistent with previous studies.

5 pages and 5 figures

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• Conclusive Identification of Quantum Channels via Monogamy of Quantum Correlations
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• Entanglement Property and Monogamy Relation of Gerneralized Mixed W
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• Sensitivity of the entanglement spectrum to boundary conditions as a characterization of the phase transition from delocalization to localization
• Conditional global entanglement in a Kosterlitz-Thouless quantum phase transition
• Relativistic three-partite non-locality
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