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Título

Generation of bipartite spin entanglement via spin-independent scattering

AutorLamata, Lucas ; León, Juan
Palabras claveQuantum entanglement
Bell theorem
Fermion systems
Information theory
Fecha de publicación26-may-2006
EditorAmerican Physical Society
CitaciónPhysical Review A 73(5): 052322 (2006)
ResumenWe consider the bipartite spin entanglement between two identical fermions generated in spin-independent scattering. We show how the spatial degrees of freedom act as ancillas for the creation of entanglement to a degree that depends on the scattering angle Θ. The number of Slater determinants generated in the process is greater than 1, corresponding to genuine quantum correlations between the identical fermions. The maximal entanglement attainable of 1 ebit is reached at Θ = π/2. We also analyze a simple Θ-dependent Bell's inequality, which is violated for π/4 < Θ ≤ π/2. This phenomenon is unrelated to the symmetrization postulate but does not appear for unequal particles.
Descripción4 pages, 3 figures.-- PACS nrs.: 03.67.Mn; 03.65.Ud.-- ArXiv pre-print available at: http://arxiv.org/abs/quant-ph/0602090
Versión del editorhttp://dx.doi.org/10.1103/PhysRevA.73.052322
URIhttp://hdl.handle.net/10261/12244
DOI10.1103/PhysRevA.73.052322
ISSN1050-2947
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