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Título

A case of entanglement generation between causally disconnected atoms

AutorLeón, Juan ; Sabín, Carlos
Palabras claveEntanglement
Non-locality
Non-signaling
Fecha de publicaciónene-2009
EditorWorld Scientific Publishing
CitaciónInternational Journal of Quantum Information (IJQI) 7(1) supp (Jan 2009): 187–193
ResumenWe analyze the entanglement generated in a finite time between a pair of space-like separated atoms, one of which emits a photon. As we show to order e2, the origin of entanglement can be traced back to the uncertainty about which one of the atoms emitted the photon. We check this by comparing the time behaviors of the emission processes allowed by energy conservation versus those forbidden by the same reason. No physical signal propagates between the atoms in the processes considered, however an effective light cone separating non-entangled from entangled regions in space-time emerges from our calculations.
Descripción7 pages, 4 figures.-- ArXiv pre-print available at: http://arxiv.org/abs/0805.2110
Versión del editorhttp://dx.doi.org/10.1142/S0219749909004773
URIhttp://hdl.handle.net/10261/12355
DOI10.1142/S0219749909004773
ISSN1793-6918
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