Abstract
Quantum cryptography is the first application of quantum physics at the single photon level. The most important application of quantum cryptography is Quantum Key Distribution (QKD). One of the biggest problems of QKD implementation is enormous number of possible attacks, which puts out specific need for more refined simulation strategies in bridging the gap between theoretic models and their implementation. In this work we have introduced generalized optical architecture which can provide various solutions of some actual problems for two mostly used QKD protocols: BB84 and B92 protocols. Simulations, which included the influence of optical losses over a quantum channel with concrete realistic lengths, have confirmed validity and high level of provable security of the proposed generalized QKD authentication architecture. Due to simplicity of the proposed architecture and obtained QKD B92 protocol communication efficiency, we believe that it can be implemented, solving out some of the most relevant implementation problems which are common for both QKD protocols.
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Acknowledgements
This work was supported by the Brazilian agencies CAPES and CNPq via Grant No. 303514/2008-6. Authors of this article would like to thank Professor dr Petar Matavulj from School of Electrical Engineering, University of Belgrade for his helpful advice on various technical issues presented in this article without whose help this article would not have this form. We would also like to thank Professor Dr R. V. Ramos from Department of Teleinformatics Engineering, Federal University of Ceara for interesting and helpful discussions.
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This article is part of the Topical Collection on Focus on Optics and Bio-photonics, Photonica 2017.
Guest Edited by Jelena Radovanovic, Aleksandar Krmpot, Marina Lekic, Trevor Benson, Mauro Pereira, Marian Marciniak.
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Miljkovic, N.N., Stojanovic, A.D. Multiparameter QKD authentication protocol design over optical quantum channel. Opt Quant Electron 50, 319 (2018). https://doi.org/10.1007/s11082-018-1585-y
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DOI: https://doi.org/10.1007/s11082-018-1585-y