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Statements

Subject Item
n2:RIV%2F61989592%3A15310%2F14%3A33149981%21RIV15-MSM-15310___
rdf:type
skos:Concept n16:Vysledek
rdfs:seeAlso
http://journals.aps.org/pra/pdf/10.1103/PhysRevA.90.022328
dcterms:description
We study general quantum correlations of continuous variable Gaussian states and their interplay with entanglement. Specifically, we investigate the existence of a quantum protocol activating all nonclassical correlations between the subsystems of an input bipartite continuous variable system, into output entanglement between the system and a set of ancillae. For input Gaussian states, we prove that such an activation protocol cannot be accomplished with Gaussian operations, as the latter are unable to create any output entanglement from an initial separable yet nonclassical state in a worst-case scenario. We then construct a faithful non-Gaussian activation protocol, encompassing infinite-dimensional generalizations of controlled-NOT gates to generate entanglement between system and ancillae, in direct analogy with the finite-dimensional case. We finally calculate the negativity of quantumness, an operational measure of nonclassical correlations defined in terms of the performance of the activation protocol, for relevant classes of two-mode Gaussian states. We study general quantum correlations of continuous variable Gaussian states and their interplay with entanglement. Specifically, we investigate the existence of a quantum protocol activating all nonclassical correlations between the subsystems of an input bipartite continuous variable system, into output entanglement between the system and a set of ancillae. For input Gaussian states, we prove that such an activation protocol cannot be accomplished with Gaussian operations, as the latter are unable to create any output entanglement from an initial separable yet nonclassical state in a worst-case scenario. We then construct a faithful non-Gaussian activation protocol, encompassing infinite-dimensional generalizations of controlled-NOT gates to generate entanglement between system and ancillae, in direct analogy with the finite-dimensional case. We finally calculate the negativity of quantumness, an operational measure of nonclassical correlations defined in terms of the performance of the activation protocol, for relevant classes of two-mode Gaussian states.
dcterms:title
No-activation theorem for Gaussian nonclassical correlations by Gaussian operations No-activation theorem for Gaussian nonclassical correlations by Gaussian operations
skos:prefLabel
No-activation theorem for Gaussian nonclassical correlations by Gaussian operations No-activation theorem for Gaussian nonclassical correlations by Gaussian operations
skos:notation
RIV/61989592:15310/14:33149981!RIV15-MSM-15310___
n3:aktivita
n20:P
n3:aktivity
P(EE2.3.20.0060), P(GAP205/12/0694)
n3:cisloPeriodika
2
n3:dodaniDat
n17:2015
n3:domaciTvurceVysledku
Mcnulty, Daniel n14:3492567
n3:druhVysledku
n19:J
n3:duvernostUdaju
n9:S
n3:entitaPredkladatele
n13:predkladatel
n3:idSjednocenehoVysledku
32678
n3:idVysledku
RIV/61989592:15310/14:33149981
n3:jazykVysledku
n15:eng
n3:klicovaSlova
discord; entanglement; separability criterion; continuous-variable systems
n3:klicoveSlovo
n5:continuous-variable%20systems n5:separability%20criterion n5:entanglement n5:discord
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[A9D70D4131C8]
n3:nazevZdroje
Physical Review A
n3:obor
n4:BH
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
3
n3:projekt
n18:EE2.3.20.0060 n18:GAP205%2F12%2F0694
n3:rokUplatneniVysledku
n17:2014
n3:svazekPeriodika
90
n3:tvurceVysledku
Mišta, Ladislav Mcnulty, Daniel Adesso, Gerardo
n3:wos
000341260700008
s:issn
1050-2947
s:numberOfPages
9
n6:doi
10.1103/PhysRevA.90.022328
n7:organizacniJednotka
15310