Non-equilibrium quantum phase transition via entanglement decoherence dynamics

We investigate the decoherence dynamics of continuous variable entanglement as the system-environment coupling strength varies from the weak-coupling to the strong-coupling regimes. Due to the existence of localized modes in the strong-coupling regime, the system cannot approach equilibrium with its...

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Autores principales: Lin, Yu-Chen, Yang, Pei-Yun, Zhang, Wei-Min
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5054423/
https://www.ncbi.nlm.nih.gov/pubmed/27713556
http://dx.doi.org/10.1038/srep34804
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author Lin, Yu-Chen
Yang, Pei-Yun
Zhang, Wei-Min
author_facet Lin, Yu-Chen
Yang, Pei-Yun
Zhang, Wei-Min
author_sort Lin, Yu-Chen
collection PubMed
description We investigate the decoherence dynamics of continuous variable entanglement as the system-environment coupling strength varies from the weak-coupling to the strong-coupling regimes. Due to the existence of localized modes in the strong-coupling regime, the system cannot approach equilibrium with its environment, which induces a nonequilibrium quantum phase transition. We analytically solve the entanglement decoherence dynamics for an arbitrary spectral density. The nonequilibrium quantum phase transition is demonstrated as the system-environment coupling strength varies for all the Ohmic-type spectral densities. The 3-D entanglement quantum phase diagram is obtained.
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spelling pubmed-50544232016-10-19 Non-equilibrium quantum phase transition via entanglement decoherence dynamics Lin, Yu-Chen Yang, Pei-Yun Zhang, Wei-Min Sci Rep Article We investigate the decoherence dynamics of continuous variable entanglement as the system-environment coupling strength varies from the weak-coupling to the strong-coupling regimes. Due to the existence of localized modes in the strong-coupling regime, the system cannot approach equilibrium with its environment, which induces a nonequilibrium quantum phase transition. We analytically solve the entanglement decoherence dynamics for an arbitrary spectral density. The nonequilibrium quantum phase transition is demonstrated as the system-environment coupling strength varies for all the Ohmic-type spectral densities. The 3-D entanglement quantum phase diagram is obtained. Nature Publishing Group 2016-10-07 /pmc/articles/PMC5054423/ /pubmed/27713556 http://dx.doi.org/10.1038/srep34804 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Lin, Yu-Chen
Yang, Pei-Yun
Zhang, Wei-Min
Non-equilibrium quantum phase transition via entanglement decoherence dynamics
title Non-equilibrium quantum phase transition via entanglement decoherence dynamics
title_full Non-equilibrium quantum phase transition via entanglement decoherence dynamics
title_fullStr Non-equilibrium quantum phase transition via entanglement decoherence dynamics
title_full_unstemmed Non-equilibrium quantum phase transition via entanglement decoherence dynamics
title_short Non-equilibrium quantum phase transition via entanglement decoherence dynamics
title_sort non-equilibrium quantum phase transition via entanglement decoherence dynamics
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5054423/
https://www.ncbi.nlm.nih.gov/pubmed/27713556
http://dx.doi.org/10.1038/srep34804
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AT yangpeiyun nonequilibriumquantumphasetransitionviaentanglementdecoherencedynamics
AT zhangweimin nonequilibriumquantumphasetransitionviaentanglementdecoherencedynamics

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