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Statements

Subject Item
n2:RIV%2F00216208%3A11320%2F14%3A10283181%21RIV15-MSM-11320___
rdf:type
skos:Concept n18:Vysledek
rdfs:seeAlso
http://dx.doi.org/10.1209/0295-5075/107/67004
dcterms:description
We address the question of the role of quantum correlations beyond entanglement in the context of quantum magnetometry. We study the evolution of the rescaled variant of the geometric quantum discord of two electron-spin qubits interacting with an environment of nuclear spins via the hyperfine interaction. We have found that quantum correlations display a strong magnetic-field sensitivity which can be utilized for decoherence-driven measurements of the external magnetic field. The discord-based measurement is sensitive to a wider range of magnetic-field values than the entanglement-based measurement, including very small fields which are inaccessible via entanglement. Copyright (C) EPLA, 2014 We address the question of the role of quantum correlations beyond entanglement in the context of quantum magnetometry. We study the evolution of the rescaled variant of the geometric quantum discord of two electron-spin qubits interacting with an environment of nuclear spins via the hyperfine interaction. We have found that quantum correlations display a strong magnetic-field sensitivity which can be utilized for decoherence-driven measurements of the external magnetic field. The discord-based measurement is sensitive to a wider range of magnetic-field values than the entanglement-based measurement, including very small fields which are inaccessible via entanglement. Copyright (C) EPLA, 2014
dcterms:title
The decay of quantum correlations between quantum dot spin qubits and the characteristics of its magnetic-field dependence The decay of quantum correlations between quantum dot spin qubits and the characteristics of its magnetic-field dependence
skos:prefLabel
The decay of quantum correlations between quantum dot spin qubits and the characteristics of its magnetic-field dependence The decay of quantum correlations between quantum dot spin qubits and the characteristics of its magnetic-field dependence
skos:notation
RIV/00216208:11320/14:10283181!RIV15-MSM-11320___
n3:aktivita
n14:I
n3:aktivity
I
n3:cisloPeriodika
6
n3:dodaniDat
n4:2015
n3:domaciTvurceVysledku
Roszak, Katarzyna
n3:druhVysledku
n13:J
n3:duvernostUdaju
n12:S
n3:entitaPredkladatele
n10:predkladatel
n3:idSjednocenehoVysledku
9918
n3:idVysledku
RIV/00216208:11320/14:10283181
n3:jazykVysledku
n16:eng
n3:klicovaSlova
discord; entanglement
n3:klicoveSlovo
n5:discord n5:entanglement
n3:kodStatuVydavatele
FR - Francouzská republika
n3:kontrolniKodProRIV
[1127559F5DCA]
n3:nazevZdroje
Europhysics Letters
n3:obor
n8:BM
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
3
n3:rokUplatneniVysledku
n4:2014
n3:svazekPeriodika
107
n3:tvurceVysledku
Mazurek, P. Horodecki, P. Roszak, Katarzyna
n3:wos
000343125400021
s:issn
0295-5075
s:numberOfPages
6
n11:doi
10.1209/0295-5075/107/67004
n15:organizacniJednotka
11320