Classical correlations can enhance the continuous-variable quantum key distribution

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F11%3A33118489" target="_blank" >RIV/61989592:15310/11:33118489 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1134/S0030400X11110300" target="_blank" >http://dx.doi.org/10.1134/S0030400X11110300</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1134/S0030400X11110300" target="_blank" >10.1134/S0030400X11110300</a>

Result language

angličtina

Original language name

Classical correlations can enhance the continuous-variable quantum key distribution

Original language description

We address the effect of classical correlations, introduced to a quantum resource used for the continuous-variable quantum key distribution. The set-up is based on an entangled source with two trusted parties performing homodyne measurements on their modes, thus corresponding to the preparation of squeezed states, while one of the modes is traveling to the remote party through lossy and noisy channel. The security of the scheme is considered against individual and collective eavesdropping attacks. It isshown that the classical correlations added to the entangled source increase the performance of the scheme both quantatively in terms of the secure key rate and qualitatively in terms of the security region with respect to the tolerable excess noise forboth types of attacks and the improvement is essentially significant for sources possessing low degree of nonclassicality.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BH - Optics, masers and lasers

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2011

Confidentiality

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

Name of the periodical

Optics and Spectroscopy

ISSN

0030-400X

e-ISSN

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Volume of the periodical

111

Issue of the periodical within the volume

5

Country of publishing house

RU - RUSSIAN FEDERATION

Number of pages

5

Pages from-to

673-677

UT code for WoS article

000297710000001

EID of the result in the Scopus database

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