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Título: | Robustness of highly entangled multiqubit systems under decoherence. |
Autor: | Borras, A.; Plastino, Ángel R.; Casas, Montserrat CSIC; Plastino, A. | Fecha de publicación: | 2009 | Editor: | American Physical Society | Citación: | Physical Review A 79: 022108 (1-7) (2009) | Resumen: | We investigate the decay of entanglement, due to decoherence, of multiqubit systems that are initially prepared in highly (in some cases maximally) entangled states. We assume that during the decoherence processes each qubit of the system interacts with its own independent environment. We determine, for systems with a small number of qubits and for various decoherence channels, the initial states exhibiting the most robust entanglement. We also consider a restricted version of this robustness-optimization problem that only involves states equivalent, under local unitary transformations, to the Greenberger-Horne-Zeilinger |GHZ⟩ state. | Descripción: | PACS: 03.65.Yz | Versión del editor: | http://dx.doi.org/10.1103/PhysRevA.79.022108 | URI: | http://hdl.handle.net/10261/46725 | DOI: | 10.1103/PhysRevA.79.022108 | ISSN: | 1050-2947 | E-ISSN: | 1094-1622 |
Aparece en las colecciones: | (IFISC) Artículos |
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PhysRevA.79.022108.pdf | 274,96 kB | Adobe PDF | Visualizar/Abrir |
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