dc.contributor.authorDuan, Liwei
dc.contributor.authorWang, Hui
dc.contributor.authorChen, Qing-Hu
dc.contributor.authorZhao, Yang
dc.identifier.citationDuan, L., Wang, H., Chen, Q. H.,& Zhao, Y. (2013). Entanglement dynamics of two qubits coupled individually to Ohmic baths. The Journal of Chemical Physics, 139(4), 044115.en_US
dc.description.abstractDeveloped originally for the Holstein polaron, the Davydov D1 ansatz is an efficient, yet extremely accurate trial state for time-dependent variation of the spin-boson model [N. Wu, L. Duan, X. Li, and Y. Zhao, J. Chem. Phys. 138, 084111 (2013)]10.1063/1.4792502. In this work, the Dirac-Frenkel time-dependent variational procedure utilizing the Davydov D1 ansatz is implemented to study entanglement dynamics of two qubits under the influence of two independent baths. The Ohmic spectral density is used without the Born-Markov approximation or the rotating-wave approximation. In the strong coupling regime finite-time disentanglement is always found to exist, while at the intermediate coupling regime, the entanglement dynamics calculated by Davydov D1 ansatz displays oscillatory behavior in addition to entanglement disappearance and revival.en_US
dc.relation.ispartofseriesThe journal of chemical physicsen_US
dc.rights© 2013 AIP Publishing LLC. This paper was published in The Journal of Chemical Physics and is made available as an electronic reprint (preprint) with permission of AIP Publishing LLC. The paper can be found at the following official DOI: [http://dx.doi.org/10.1063/1.4816122].  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.en_US
dc.titleEntanglement dynamics of two qubits coupled individually to Ohmic bathsen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.description.versionPublished versionen_US

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