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4 papers · 2 filters
Entropic characteristics of subsets of states
M. E. Shirokov
This paper is devoted to systematic study of properties of the quantum entropy and of the Holevo capacity considered as a function of a set of quantum states. The properties of res…
On Standards and Specifications in Quantum Cryptography
A. S. Trushechkin, I. V. Volovich
Quantum cryptography is going to find practically useful applications. Recently some first quantum cryptographic solutions became available on the market. For clients it is importa…
Separability and Entanglement-Breaking in Infinite Dimensions
A. S. Holevo, M. E. Shirokov, R. F. Werner
In this paper we give a general integral representation for separable states in the tensor product of infinite dimensional Hilbert spaces and provide the first example of separable…
General model of quantum key distribution
A. S. Trushechkin, I. V. Volovich
A general mathematical framework for quantum key distribution based on the concepts of quantum channel and Turing machine is suggested. The security for its special case is proved.…