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Statements

Subject Item
n2:RIV%2F68407700%3A21340%2F11%3A00184360%21RIV12-MSM-21340___
rdf:type
skos:Concept n20:Vysledek
dcterms:description
The destruction of entanglement of open quantum systems by decoherence is investigated in the asymptotic long-time limit. For this purpose a general and analytically solvable decoherence model is presented which does not involve any weak-coupling or Markovian assumption. It is shown that two fundamentally different classes of entangled states can be distinguished and that they can be influenced significantly by two important environmental properties, namely, its initially prepared state and its size. Quantum states of the first class are fragile against decoherence so that they can be disentangled asymptotically even if coherences between pointer states are still present. Quantum states of the second type are robust against decoherence. Asymptotically they can be disentangled only if also decoherence is perfect. A simple criterion for identifying these two classes on the basis of two-qubit entanglement is presented. The destruction of entanglement of open quantum systems by decoherence is investigated in the asymptotic long-time limit. For this purpose a general and analytically solvable decoherence model is presented which does not involve any weak-coupling or Markovian assumption. It is shown that two fundamentally different classes of entangled states can be distinguished and that they can be influenced significantly by two important environmental properties, namely, its initially prepared state and its size. Quantum states of the first class are fragile against decoherence so that they can be disentangled asymptotically even if coherences between pointer states are still present. Quantum states of the second type are robust against decoherence. Asymptotically they can be disentangled only if also decoherence is perfect. A simple criterion for identifying these two classes on the basis of two-qubit entanglement is presented.
dcterms:title
Entanglement and Decoherence: Fragile and Robust Entanglement Entanglement and Decoherence: Fragile and Robust Entanglement
skos:prefLabel
Entanglement and Decoherence: Fragile and Robust Entanglement Entanglement and Decoherence: Fragile and Robust Entanglement
skos:notation
RIV/68407700:21340/11:00184360!RIV12-MSM-21340___
n20:predkladatel
n21:orjk%3A21340
n3:aktivita
n8:Z n8:P
n3:aktivity
P(LC06002), Z(MSM6840770039)
n3:cisloPeriodika
9
n3:dodaniDat
n10:2012
n3:domaciTvurceVysledku
n5:7045247 n5:2434644
n3:druhVysledku
n15:J
n3:duvernostUdaju
n7:S
n3:entitaPredkladatele
n4:predkladatel
n3:idSjednocenehoVysledku
197632
n3:idVysledku
RIV/68407700:21340/11:00184360
n3:jazykVysledku
n16:eng
n3:klicovaSlova
decoherence; entanglement
n3:klicoveSlovo
n19:entanglement n19:decoherence
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[80E2EE81E27F]
n3:nazevZdroje
Physical Review Letters
n3:obor
n12:BE
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
3
n3:projekt
n17:LC06002
n3:rokUplatneniVysledku
n10:2011
n3:svazekPeriodika
107
n3:tvurceVysledku
Novotný, Jaroslav Jex, Igor Alber, G.
n3:wos
000294268000001
n3:zamer
n18:MSM6840770039
s:issn
0031-9007
s:numberOfPages
4
n13:doi
10.1103/PhysRevLett.107.090501
n14:organizacniJednotka
21340