Multipartite entanglement of superpositions

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dc.creatorCavalcanti, D.
dc.creatorCunha, M. O. Terra
dc.creatorAcin, A.
dc.date2007-05-17
dc.date2007-05-22
dc.date.accessioned2026-07-07T08:37:58Z
dc.date.available2026-07-07T08:37:58Z
dc.descriptionThe entanglement of superpositions [Phys. Rev. Lett. 97, 100502 (2006)] is generalized to the multipartite scenario: an upper bound to the multipartite entanglement of a superposition is given in terms of the entanglement of the superposed states and the superposition coefficients. This bound is proven to be tight for a class of states composed by an arbitrary number of qubits. We also extend the result to a large family of quantifiers which includes the negativity, the robustness of entanglement, and the best separable approximation measure.
dc.description4 pages. v2: reference added, text improved in clarity
dc.identifierhttps://arxiv.org/abs/0705.2521
dc.identifierhttp://arxiv.org/abs/0705.2521
dc.identifierPhys. Rev. A 76, 042329 (2007)
dc.identifierdoi:10.1103/PhysRevA.76.042329
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/140561
dc.subjectQuantum Physics
dc.titleMultipartite entanglement of superpositions
dc.typetext

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