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Statements

Subject Item
n2:RIV%2F61989592%3A15310%2F12%3A33140470%21RIV13-MSM-15310___
rdf:type
skos:Concept n10:Vysledek
dcterms:description
Experimental observations are usually described using theoretical models that make assumptions about the dimensionality of the system under consideration. However, would it be possible to assess the dimension of a completely unknown system only from the results of measurements performed on it, without any extra assumption? The concept of a dimension witness(1-6) answers this question, as it allows bounding the dimension of an unknown system only from measurement statistics. Here, we report on the experimental demonstration of dimension witnesses in a prepare and measure scenario(6). We use photon pairs entangled in polarization and orbital angular momentum(7-9) to generate ensembles of classical and quantum states of dimensions up to 4. We then use a dimension witness to certify their dimensionality as well as their quantum nature. Our work opens newavenues in quantum information science, where dimension represents a powerful resource(10-12), especially for device-independent estimation of quantum systems(13-16) and quantum communications(17,18). Experimental observations are usually described using theoretical models that make assumptions about the dimensionality of the system under consideration. However, would it be possible to assess the dimension of a completely unknown system only from the results of measurements performed on it, without any extra assumption? The concept of a dimension witness(1-6) answers this question, as it allows bounding the dimension of an unknown system only from measurement statistics. Here, we report on the experimental demonstration of dimension witnesses in a prepare and measure scenario(6). We use photon pairs entangled in polarization and orbital angular momentum(7-9) to generate ensembles of classical and quantum states of dimensions up to 4. We then use a dimension witness to certify their dimensionality as well as their quantum nature. Our work opens newavenues in quantum information science, where dimension represents a powerful resource(10-12), especially for device-independent estimation of quantum systems(13-16) and quantum communications(17,18).
dcterms:title
Experimental estimation of the dimension of classical and quantum systems Experimental estimation of the dimension of classical and quantum systems
skos:prefLabel
Experimental estimation of the dimension of classical and quantum systems Experimental estimation of the dimension of classical and quantum systems
skos:notation
RIV/61989592:15310/12:33140470!RIV13-MSM-15310___
n10:predkladatel
n11:orjk%3A15310
n3:aktivita
n18:Z
n3:aktivity
Z(MSM6198959213)
n3:cisloPeriodika
8
n3:dodaniDat
n13:2013
n3:domaciTvurceVysledku
n6:2504499
n3:druhVysledku
n20:J
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n15:predkladatel
n3:idSjednocenehoVysledku
135554
n3:idVysledku
RIV/61989592:15310/12:33140470
n3:jazykVysledku
n9:eng
n3:klicovaSlova
PHOTONS; ENTANGLEMENT; BELL INEQUALITIES; ORBITAL ANGULAR-MOMENTUM
n3:klicoveSlovo
n5:BELL%20INEQUALITIES n5:ORBITAL%20ANGULAR-MOMENTUM n5:PHOTONS n5:ENTANGLEMENT
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[A613745896EC]
n3:nazevZdroje
Nature Physics
n3:obor
n16:BH
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
6
n3:rokUplatneniVysledku
n13:2012
n3:svazekPeriodika
8
n3:tvurceVysledku
Hendrych, Martin Acin, Antonio Torres, Juan P. Mičuda, Michal Brunner, Nicolas Gallego, Rodrigo
n3:wos
000307223900008
n3:zamer
n12:MSM6198959213
s:issn
1745-2473
s:numberOfPages
4
n19:doi
10.1038/NPHYS2334
n7:organizacniJednotka
15310