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Statements

Subject Item
n2:RIV%2F00216224%3A14330%2F03%3A00008726%21RIV%2F2004%2FGA0%2F143304%2FN
rdf:type
skos:Concept n13:Vysledek
dcterms:description
Bipartite correlations in multiqubit systems cannot be shared freely. The presence of entanglement or classical correlation on certain pairs of qubits may imply correlations on other pairs. We present a method of characterization of bipartite correlations in multiqubit systems using a concept of entangled graphs which has been introduced in our earlier work @M. Plesch and V. Bužek, Phys. Rev. A 67, 012322 ~2003!#. In entangled graphs, each qubit is represented by a vertex while the entanglement and classical correlations are represented by two types of edges. We prove by construction that any entangled graph with classical correlations can be represented by a mixed state of N qubits. However, not all entangled graphs with classical correlations can be represented by a pure state. Bipartite correlations in multiqubit systems cannot be shared freely. The presence of entanglement or classical correlation on certain pairs of qubits may imply correlations on other pairs. We present a method of characterization of bipartite correlations in multiqubit systems using a concept of entangled graphs which has been introduced in our earlier work @M. Plesch and V. Bužek, Phys. Rev. A 67, 012322 ~2003!#. In entangled graphs, each qubit is represented by a vertex while the entanglement and classical correlations are represented by two types of edges. We prove by construction that any entangled graph with classical correlations can be represented by a mixed state of N qubits. However, not all entangled graphs with classical correlations can be represented by a pure state.
dcterms:title
Entangled graphs: Classical correlations in multi-qubit entangled systems Entangled graphs: Classical correlations in multi-qubit entangled systems
skos:prefLabel
Entangled graphs: Classical correlations in multi-qubit entangled systems Entangled graphs: Classical correlations in multi-qubit entangled systems
skos:notation
RIV/00216224:14330/03:00008726!RIV/2004/GA0/143304/N
n3:strany
2313-2318
n3:aktivita
n18:P n18:Z
n3:aktivity
P(GA201/01/0413), Z(MSM 143300001)
n3:cisloPeriodika
01
n3:dodaniDat
n12:2004
n3:domaciTvurceVysledku
n9:3626423 n9:4347196
n3:druhVysledku
n14:J
n3:duvernostUdaju
n6:S
n3:entitaPredkladatele
n19:predkladatel
n3:idSjednocenehoVysledku
605989
n3:idVysledku
RIV/00216224:14330/03:00008726
n3:jazykVysledku
n10:eng
n3:klicovaSlova
Entanglement theory
n3:klicoveSlovo
n5:Entanglement%20theory
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[291538C4D20A]
n3:nazevZdroje
Physical Review A (Atomic, Molecular, and Optical Physics)
n3:obor
n15:IN
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:pocetUcastnikuAkce
0
n3:pocetZahranicnichUcastnikuAkce
0
n3:projekt
n17:GA201%2F01%2F0413
n3:rokUplatneniVysledku
n12:2003
n3:svazekPeriodika
68
n3:tvurceVysledku
Plesch, Martin Bužek, Vladimír
n3:zamer
n11:MSM%20143300001
s:issn
1094-1622
s:numberOfPages
6
n16:organizacniJednotka
14330