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Statements

Subject Item
n2:RIV%2F61989592%3A15310%2F10%3A10221900%21RIV11-GA0-15310___
rdf:type
skos:Concept n8:Vysledek
dcterms:description
Quantum squeezing, an irreducible resource for quantum communication and quantum metrology, is very fragile and can be lost due to classical noise produced by an environment. We show that a classical correlation between the squeezed signal and the classical probe partially monitoring noise from the environment can be used as a resource to restore the lost squeezing. Two basic methods, the feed-forward restoration and the unitary decoupling, are proposed to exploit this classical correlation. They are mutually compared for high and low squeezing and also in the different regimes of correlated classical noise. On one side, a robustness against classical probe noise to restore at least nonzero squeezing is discussed, and on the other side, a complete revealing of the high squeezing by a squeezed probe and unitary decoupling is proposed. Quantum squeezing, an irreducible resource for quantum communication and quantum metrology, is very fragile and can be lost due to classical noise produced by an environment. We show that a classical correlation between the squeezed signal and the classical probe partially monitoring noise from the environment can be used as a resource to restore the lost squeezing. Two basic methods, the feed-forward restoration and the unitary decoupling, are proposed to exploit this classical correlation. They are mutually compared for high and low squeezing and also in the different regimes of correlated classical noise. On one side, a robustness against classical probe noise to restore at least nonzero squeezing is discussed, and on the other side, a complete revealing of the high squeezing by a squeezed probe and unitary decoupling is proposed.
dcterms:title
Squeezing restoration by a noisy probe from a classically correlated environment Squeezing restoration by a noisy probe from a classically correlated environment
skos:prefLabel
Squeezing restoration by a noisy probe from a classically correlated environment Squeezing restoration by a noisy probe from a classically correlated environment
skos:notation
RIV/61989592:15310/10:10221900!RIV11-GA0-15310___
n3:aktivita
n11:Z n11:P n11:N
n3:aktivity
N, P(GA202/08/0224), P(LC06007), Z(MSM6198959213)
n3:cisloPeriodika
3
n3:dodaniDat
n12:2011
n3:domaciTvurceVysledku
n10:9410406
n3:druhVysledku
n17:J
n3:duvernostUdaju
n6:S
n3:entitaPredkladatele
n13:predkladatel
n3:idSjednocenehoVysledku
289436
n3:idVysledku
RIV/61989592:15310/10:10221900
n3:jazykVysledku
n16:eng
n3:klicovaSlova
INTERFEROMETER; LIGHT; STATES; EQUIVALENCE CLASSES; CONTINUOUS-VARIABLES; QUANTUM TELEPORTATION; MINIMUM-UNCERTAINTY PACKETS
n3:klicoveSlovo
n4:STATES n4:MINIMUM-UNCERTAINTY%20PACKETS n4:CONTINUOUS-VARIABLES n4:LIGHT n4:EQUIVALENCE%20CLASSES n4:QUANTUM%20TELEPORTATION n4:INTERFEROMETER
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[1E0606DB413B]
n3:nazevZdroje
Physical Review A
n3:obor
n19:BH
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
1
n3:projekt
n18:LC06007 n18:GA202%2F08%2F0224
n3:rokUplatneniVysledku
n12:2010
n3:svazekPeriodika
81
n3:tvurceVysledku
Filip, Radim
n3:zamer
n9:MSM6198959213
s:issn
1050-2947
s:numberOfPages
7
n15:organizacniJednotka
15310