Quantum cryptography and combined schemes of quantum cryptography communication networks

• Published in: Quantum electronics (Woodbury, N.Y.) Vol. 48; no. 9; pp. 777 - 801
• Main Authors: Bykovsky, A.Yu, Kompanets, I.N.
• Format: Journal Article
• Language: English
• Published: Bristol Kvantovaya Elektronika, Turpion Ltd and IOP Publishing 01.09.2018; IOP Publishing
• Subjects: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Communication networks; COMMUNICATIONS; COMPUTER CODES; COMPUTERIZED SIMULATION; Cryptography; Data processing; fibre-optic communication line; LASERS; multi-agent network management system; multi-valued (or multiple-valued) logic protected encoding; Multiagent systems; network-centric system; NOISE; optical communication; photonic network; Photonics; Protocol (computers); QUANTUM CRYPTOGRAPHY; quantum key distribution; QUANTUM MECHANICS; Random numbers; RANDOMNESS; secure encoding
• ISSN: 1063-7818; 1468-4799
• DOI: 10.1070/QEL16732

We discuss cryptographic data protection network schemes combining the approaches of quantum cryptography with advanced computer information processing methods. The use of the latter is due to the presence of a number of unsolved problems in the existing quantum key distribution systems and is also associated with projects for the development of network-centric quantum communications and photonic networks, which involves the employment of multi-agent control models. Developments based on the Y-00 protocol with data encoding by the quantum noise of a transmitting laser are considered, and achievements in the field of quantum-optical random number generators are presented. The latter can be also used to design secure multi-valued logic encoding schemes that are promising for increasing the dimension of the key space in the 'one-time pad' method, for solving the tasks of position-dependent cryptography and for implementing multi-agent models.