Superbroadcasting of conjugate quantum variables

Simple item page
dc.creatorD'Ariano, Giacomo M.
dc.creatorPerinotti, Paolo
dc.creatorSacchi, Massimiliano F.
dc.date2006-02-03
dc.date2006-05-19
dc.date.accessioned2026-07-07T07:52:57Z
dc.date.available2026-07-07T07:52:57Z
dc.descriptionWe consider the problem of broadcasting arbitrary states of radiation modes from N to M>N copies by a map that preserves the average value of the field and optimally reduces the total noise in conjugate variables. For N>=2 the broadcasting can be achieved perfectly, and for sufficiently noisy input states one can even purify the state while broadcasting--the so-called superbroadcasting. For purification (i.e. M<=N), the reduction of noise is independent of M. Similar results are proved for broadcasting with phase-conjugation. All the optimal maps can be implemented by linear optics and linear amplification.
dc.description7 pages, 1 eps figures. Accepted for publication on Europhysics Letters
dc.identifierhttps://arxiv.org/abs/quant-ph/0602037
dc.identifierhttp://arxiv.org/abs/quant-ph/0602037
dc.identifierEurophys. Lett. 75, 195 (2006)
dc.identifierdoi:10.1209/epl/i2006-10105-x
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/126068
dc.subjectQuantum Physics
dc.titleSuperbroadcasting of conjugate quantum variables
dc.typetext

Files

Collections

arXiv