Email this article Concatenation of Keys in Quantum Cryptography: How Quantum Entanglement “Penetrates to” Classical Devices
- Authors: Molotkov S.N.1,2,3
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Affiliations:
- Institute of Solid State Physics, Russian Academy of Sciences
- Academy of Cryptography of the Russian Federation
- Faculty of Computational Mathematics and Cybernetics, Moscow State University
- Issue: Vol 127, No 4 (2018)
- Pages: 627-637
- Section: Atoms, Molecules, Optics
- URL: https://journals.rcsi.science/1063-7761/article/view/193651
- DOI: https://doi.org/10.1134/S1063776118090066
- ID: 193651
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Abstract
Quantum mechanics admits collective measurements that are related to the projection onto entangled states and allow one to retrieve more classical information from an ensemble of quantum states compared with individual measurements. In this relation, a fundamental question arises for key secrecy in quantum cryptography. Should the secrecy criterion be formulated with regard to all keys distributed both on previous and future quantum key distribution (QKD) sessions, or it suffices to guarantee key secrecy only in an individual QKD session? The study of this question is the subject of the present paper.
About the authors
S. N. Molotkov
Institute of Solid State Physics, Russian Academy of Sciences; Academy of Cryptography of the Russian Federation; Faculty of Computational Mathematics and Cybernetics, Moscow State University
Author for correspondence.
Email: sergei.molotkov@gmail.com
Russian Federation, Chernogolovka, Moscow oblast, 142432; Moscow, 121552; Moscow, 119899
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