Relation between classical communication capacity and entanglement capability for two-qubit unitary operations

Simple item page
dc.creatorBerry, Dominic W.
dc.creatorSanders, Barry C.
dc.date2002-07-11
dc.date2004-01-09
dc.date.accessioned2026-07-07T06:04:35Z
dc.date.available2026-07-07T06:04:35Z
dc.descriptionTwo-qubit operations may be characterized by their capacities for communication, both with and without free entanglement, and their capacity for creating entanglement. We establish a set of inequalities that give an ordering to the capacities of two-qubit unitary operations. Specifically, we show that the capacities for entanglement creation and bidirectional communication without entanglement assistance are at least as great as half the bidirectional communication capacity with entanglement assistance. In addition, we show that the bidirectional communication that can be performed using an ensemble may be increased via a two-qubit unitary operation by twice the operation's capacity for entanglement.
dc.description12 pages, published version plus minor corrections
dc.identifierhttps://arxiv.org/abs/quant-ph/0207065
dc.identifierhttp://arxiv.org/abs/quant-ph/0207065
dc.identifierPhys. Rev. A. 68, 032312 (2003)
dc.identifierdoi:10.1103/PhysRevA.68.032312
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/90344
dc.subjectQuantum Physics
dc.titleRelation between classical communication capacity and entanglement capability for two-qubit unitary operations
dc.typetext

Files

Collections

arXiv