Classical correlations can enhance the continuous-variable quantum key distribution

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Classical correlations can enhance the continuous-variable quantum key distribution

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Classical correlations can enhance the continuous-variable quantum key distribution

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BH - Optika, masery a lasery

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Optics and Spectroscopy

ISSN

0030-400X

e-ISSN

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Svazek periodika

111

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

RU - Ruská federace

Počet stran výsledku

5

Strana od-do

673-677

Kód UT WoS článku

000297710000001

EID výsledku v databázi Scopus

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