Cooperative terahertz quantum key distribution: Secret key rate analysis and optimization

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F29142890%3A_____%2F24%3A00048977" target="_blank" >RIV/29142890:_____/24:00048977 - isvavai.cz</a>

Výsledek na webu

<a href="https://www-sciencedirect-com.ezproxy.lib.cas.cz/science/article/pii/S1874490724002696?via%3Dihub" target="_blank" >https://www-sciencedirect-com.ezproxy.lib.cas.cz/science/article/pii/S1874490724002696?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.phycom.2024.102551" target="_blank" >10.1016/j.phycom.2024.102551</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Cooperative terahertz quantum key distribution: Secret key rate analysis and optimization

Popis výsledku v původním jazyce

In the recent years, there has been a growing interest in quantum key distribution (QKD) as a promising alternative to conventional cryptographic methods. QKD offers potential for ensuring absolute security in communication networks, leveraging the principles of quantum mechanics. This study diverges from previous research by investigating a cooperative continuous variable QKD (CVQKD) system operating at terahertz (THz) frequencies with multiple input multiple output (MIMO) technology, wherein the source and destination are assisted by a trusted decode-and-forward (DF) relay. Our focus lies on evaluating the secret key rate (SKR) of this system under direct reconciliation conditions and subsequently optimizing power and relay location to maximize the SKR. We address the practical concern of potential eavesdropping between the relay and the destination. Specifically, our analysis centers on the SKR performance of the coherent state-based CVQKD protocol under direct reconciliation conditions. Through numerical simulations, we demonstrate the significant enhancement in SKR achievable through optimization in the cooperative QKD system, yielding several noteworthy insights.

Název v anglickém jazyce

Cooperative terahertz quantum key distribution: Secret key rate analysis and optimization

Popis výsledku anglicky

In the recent years, there has been a growing interest in quantum key distribution (QKD) as a promising alternative to conventional cryptographic methods. QKD offers potential for ensuring absolute security in communication networks, leveraging the principles of quantum mechanics. This study diverges from previous research by investigating a cooperative continuous variable QKD (CVQKD) system operating at terahertz (THz) frequencies with multiple input multiple output (MIMO) technology, wherein the source and destination are assisted by a trusted decode-and-forward (DF) relay. Our focus lies on evaluating the secret key rate (SKR) of this system under direct reconciliation conditions and subsequently optimizing power and relay location to maximize the SKR. We address the practical concern of potential eavesdropping between the relay and the destination. Specifically, our analysis centers on the SKR performance of the coherent state-based CVQKD protocol under direct reconciliation conditions. Through numerical simulations, we demonstrate the significant enhancement in SKR achievable through optimization in the cooperative QKD system, yielding several noteworthy insights.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20200 - Electrical engineering, Electronic engineering, Information engineering

Projekt

—

Návaznosti

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Physical Communication

ISSN

1874-4907

e-ISSN

—

Svazek periodika

68

Číslo periodika v rámci svazku

102551

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

1-11

Kód UT WoS článku

001370725600001

EID výsledku v databázi Scopus

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