Entanglement-swapping boxes and their communication properties

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dc.creatorGrudka, Andrzej
dc.creatorHorodecki, Michal
dc.creatorHorodecki, Pawel
dc.creatorHorodecki, Ryszard
dc.creatorPiani, Marco
dc.date2007-03-13
dc.date2008-05-23
dc.date.accessioned2026-07-07T09:45:26Z
dc.date.available2026-07-07T09:45:26Z
dc.descriptionWe pose the fundamental question of communication properties of primitives irrespectively of their implementation. To illustrate the idea we introduce the concept of entanglement-swapping boxes, i.e. we consider any quantum operations which perform entanglement swapping, not necessarily via simple quantum teleportation. We ask a question about the properties of such boxes., i.e. what local operations and how much classical communication are needed to perform them. We also ask if any box which performs entanglement swapping can be used to establish classical communication. We show that each box needs at least two bits of classical communication to perform it. It is also shown that each box can be used for classical communication and, most importantly, that there exist boxes which allow to communicate at most one bit. Surprisingly we find basic irreversibility in the process of entanglement swapping with respect to its communication properties.
dc.descriptionAccepted for publication in Phys. Rev. A as a Rapid Communication
dc.identifierhttps://arxiv.org/abs/quant-ph/0703095
dc.identifierhttp://arxiv.org/abs/quant-ph/0703095
dc.identifierPhys. Rev. A 77, 060307(R) (2008)
dc.identifierdoi:10.1103/PhysRevA.77.060307
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/163194
dc.subjectQuantum Physics
dc.titleEntanglement-swapping boxes and their communication properties
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