Continuous variable B92 quantum key distribution protocol using single photon added and subtracted coherent states

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F20%3A73602381" target="_blank" >RIV/61989592:15310/20:73602381 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1007%2Fs11128-020-02872-6" target="_blank" >https://link.springer.com/article/10.1007%2Fs11128-020-02872-6</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s11128-020-02872-6" target="_blank" >10.1007/s11128-020-02872-6</a>

Result language
angličtina
Original language name
Continuous variable B92 quantum key distribution protocol using single photon added and subtracted coherent states
Original language description
In this paper, a continuous variable B92 quantum key distribution protocol is proposed using single photon added and subtracted coherent states, which are prepared by adding and subsequently subtracting a single photon on a coherent state. It is established that in contrast to the traditional discrete variable B92 protocol, this protocol for quantum key distribution is intrinsically robust against the unambiguous state discrimination attack, which circumvents the requirement for any uninformative states or entanglement used in corresponding discrete variable case as a remedy for this attack. Further, it is shown that the proposed protocol is intrinsically robust against the eavesdropping strategies exploiting classical communication during basis reconciliation, such as beam splitter attack. Security against some individual attacks, key rate, and bit-error rate estimation for the proposed scheme are also provided. Specifically, the proposed scheme ensures very small bit-error rate due to properties of the states used. Thus, the proposed scheme is shown to be preferable over the corresponding discrete variable B92 protocol as well as some similar continuous variable quantum key distribution schemes.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10306 - Optics (including laser optics and quantum optics)

Project
<a href="/en/project/EF16_019%2F0000754" target="_blank" >EF16_019/0000754: Nanotechnologies for Future</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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