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Statements

Subject Item
n2:RIV%2F61989592%3A15310%2F14%3A33149932%21RIV15-MSM-15310___
rdf:type
skos:Concept n18:Vysledek
rdfs:seeAlso
http://journals.aps.org/pra/pdf/10.1103/PhysRevA.89.042331
dcterms:description
Multipartite quantum correlations, in spite of years of intensive research, still leavemany questions unanswered. While bipartite entanglement is relatively well understood for Gaussian states, the complexity of mere qualitative characterization grows rapidly with increasing number of parties. Here, we present two schemes for transformations of multipartite permutation invariant Gaussian states by Gaussian local operations and classical communication. To this end, we use a scheme for possible experimental realization, making use of the fact that in this picture the whole N-partite state can be described by specifying the states of two separable modes. Numerically, we study entanglement transformations of tripartite states. Finally, we look at the effect our protocols have on fidelity of assisted quantum teleportation and find that, while adding correlated noise does not affect the fidelity at all, there is strong evidence that partial nondemolition measurement leads to a drop in teleportation fidelity. Multipartite quantum correlations, in spite of years of intensive research, still leavemany questions unanswered. While bipartite entanglement is relatively well understood for Gaussian states, the complexity of mere qualitative characterization grows rapidly with increasing number of parties. Here, we present two schemes for transformations of multipartite permutation invariant Gaussian states by Gaussian local operations and classical communication. To this end, we use a scheme for possible experimental realization, making use of the fact that in this picture the whole N-partite state can be described by specifying the states of two separable modes. Numerically, we study entanglement transformations of tripartite states. Finally, we look at the effect our protocols have on fidelity of assisted quantum teleportation and find that, while adding correlated noise does not affect the fidelity at all, there is strong evidence that partial nondemolition measurement leads to a drop in teleportation fidelity.
dcterms:title
Transformations of symmetric multipartite Gaussian states by Gaussian local operations and classical communication Transformations of symmetric multipartite Gaussian states by Gaussian local operations and classical communication
skos:prefLabel
Transformations of symmetric multipartite Gaussian states by Gaussian local operations and classical communication Transformations of symmetric multipartite Gaussian states by Gaussian local operations and classical communication
skos:notation
RIV/61989592:15310/14:33149932!RIV15-MSM-15310___
n3:aktivita
n16:S n16:P
n3:aktivity
P(GAP205/12/0694), S
n3:cisloPeriodika
4
n3:dodaniDat
n4:2015
n3:domaciTvurceVysledku
n5:4427246 n5:8991081
n3:druhVysledku
n19:J
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n13:predkladatel
n3:idSjednocenehoVysledku
51019
n3:idVysledku
RIV/61989592:15310/14:33149932
n3:jazykVysledku
n17:eng
n3:klicovaSlova
criterion; information; entanglement; quantum teleportation network; continuous variable systems
n3:klicoveSlovo
n10:quantum%20teleportation%20network n10:entanglement n10:information n10:continuous%20variable%20systems n10:criterion
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[613C1882F12C]
n3:nazevZdroje
Physical Review A
n3:obor
n9:BH
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n7:GAP205%2F12%2F0694
n3:rokUplatneniVysledku
n4:2014
n3:svazekPeriodika
89
n3:tvurceVysledku
Fiurášek, Jaromír Černotík, Ondřej
n3:wos
000335227500002
s:issn
1050-2947
s:numberOfPages
8
n20:doi
10.1103/PhysRevA.89.042331
n12:organizacniJednotka
15310