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Quantum Information Processing
Erschienen in: Quantum Information Processing 11/2018

01.11.2018

Quantum coherence dynamics of three-qubit states in XY spin-chain environment

verfasst von: Shaoying Yin, Jie Song, Xuexin Xu, Yujun Zhang, Shutian Liu

Erschienen in: Quantum Information Processing | Ausgabe 11/2018

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Abstract

We investigate the dynamics of quantum coherence, based on relative entropy and quantum skew information, for tripartite systems in a quantum-critical environment. We demonstrate that initial states, the strength of magnetic field, anisotropy parameter, system–environment coupling, and the scale of the environment strongly affect coherence evolution. We find that two measures of coherence are frozen for the initial W state coupled to an XY spin-chain environment as the system–environment coupling satisfies certain conditions. We compare the dynamics of quantum coherence with that of the entanglement and the quantum discord. The analysis shows no hierarchical relationship among them.
Vorheriger Artikel Dynamics of measurement-induced nonlocality under decoherence
Nächster Artikel Quantum coherence as indicators of quantum phase transitions, factorization and thermal phase transitions in the anisotropic XY model

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Metadaten
Titel
Quantum coherence dynamics of three-qubit states in XY spin-chain environment
verfasst von
Shaoying Yin
Jie Song
Xuexin Xu
Yujun Zhang
Shutian Liu
Publikationsdatum
01.11.2018
Verlag
Springer US
Erschienen in
Quantum Information Processing / Ausgabe 11/2018
Print ISSN: 1570-0755
Elektronische ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-018-2066-8

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