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Statements

Subject Item
n2:RIV%2F68378271%3A_____%2F13%3A00424184%21RIV14-GA0-68378271
rdf:type
skos:Concept n16:Vysledek
dcterms:description
We propose a linear-optical setup for heralded qubit amplification with tunable output qubit fidelity. We study its success probability as a function of output qubit fidelity, showing that at the expense of lower fidelity, the setup can considerably increase probability of successful operation. These results are subsequently applied in a proposal for state-dependent qubit amplification. Similar to state-dependent quantum cloning, the a priori information about the input state allows us to optimize the qubit amplification procedure to obtain a better fidelity versus success probability trade-off. We propose a linear-optical setup for heralded qubit amplification with tunable output qubit fidelity. We study its success probability as a function of output qubit fidelity, showing that at the expense of lower fidelity, the setup can considerably increase probability of successful operation. These results are subsequently applied in a proposal for state-dependent qubit amplification. Similar to state-dependent quantum cloning, the a priori information about the input state allows us to optimize the qubit amplification procedure to obtain a better fidelity versus success probability trade-off.
dcterms:title
State-dependent linear-optical qubit amplifier State-dependent linear-optical qubit amplifier
skos:prefLabel
State-dependent linear-optical qubit amplifier State-dependent linear-optical qubit amplifier
skos:notation
RIV/68378271:_____/13:00424184!RIV14-GA0-68378271
n16:predkladatel
n18:ico%3A68378271
n3:aktivita
n9:P n9:I
n3:aktivity
I, P(ED2.1.00/03.0058), P(EE2.3.30.0041), P(GAP205/12/0382), P(GP13-31000P)
n3:cisloPeriodika
6
n3:dodaniDat
n12:2014
n3:domaciTvurceVysledku
n5:4646347
n3:druhVysledku
n13:J
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n4:predkladatel
n3:idSjednocenehoVysledku
107711
n3:idVysledku
RIV/68378271:_____/13:00424184
n3:jazykVysledku
n17:eng
n3:klicovaSlova
linear-optical qubit amplifier; quantum cloning; quantum cryptography
n3:klicoveSlovo
n11:linear-optical%20qubit%20amplifier n11:quantum%20cryptography n11:quantum%20cloning
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[E457A82AC430]
n3:nazevZdroje
Physical Review. A
n3:obor
n10:BH
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
3
n3:projekt
n6:GP13-31000P n6:ED2.1.00%2F03.0058 n6:EE2.3.30.0041 n6:GAP205%2F12%2F0382
n3:rokUplatneniVysledku
n12:2013
n3:svazekPeriodika
88
n3:tvurceVysledku
Bartkiewicz, K. Lemr, K. Černoch, Antonín
n3:wos
000328567900005
s:issn
1050-2947
s:numberOfPages
7
n19:doi
10.1103/PhysRevA.88.062304