Experimental demonstration of a fully inseparable quantum state with nonlocalizable entanglement

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F17%3A73581352" target="_blank" >RIV/61989592:15310/17:73581352 - isvavai.cz</a>

Result on the web

<a href="https://www.nature.com/articles/srep45045" target="_blank" >https://www.nature.com/articles/srep45045</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/srep45045" target="_blank" >10.1038/srep45045</a>

Result language

angličtina

Original language name

Experimental demonstration of a fully inseparable quantum state with nonlocalizable entanglement

Original language description

Localizability of entanglement in fully inseparable states is a key ingredient of assisted quantum information protocols as well as measurement-based models of quantum computing. We investigate the existence of fully inseparable states with nonlocalizable entanglement, that is, with entanglement which cannot be localized between any pair of subsystems by any measurement on the remaining part of the system. It is shown, that the nonlocalizable entanglement occurs already in suitable mixtures of a three-qubit GHZ state and white noise. Further, we generalize this set of states to a two-parametric family of fully inseparable three-qubit states with nonlocalizable entanglement. Finally, we demonstrate experimentally the existence of nonlocalizable entanglement by preparing and characterizing one state from the family using correlated single photons and linear optical circuit.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10306 - Optics (including laser optics and quantum optics)

Project

<a href="/en/project/GA16-17314S" target="_blank" >GA16-17314S: Complex multiqubit optical quantum logic gates</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Scientific Reports

ISSN

2045-2322

e-ISSN

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Volume of the periodical

7

Issue of the periodical within the volume

MAR

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

"45045-1"-"45045-11"

UT code for WoS article

000397723600001

EID of the result in the Scopus database

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