QUANTUM INFORMATION SCIENCE

On one asymptotic property of time-shift quantum cryptography

S. N. Molotkov<sup>abc

a</sup> Academy of Criptography of Russia
^b Institute of Solid State Physics, Russian Academy of Sciences
^c M. V. Lomonosov Moscow State University, Faculty of Computational Mathematics and Cybernetics

Abstract: One of the basic results of classical information theory is that error-free information transmission is possible even through an imperfect binary communication channel with noise up to an error of Q _c = 1/2. There is a fundamental and applied question of whether quantum-mechanical constraints can ensure error-free classical-information transmission with quantum states and, moreover, guarantee the security of distributed keys up to the theoretical limit in the error Q _c. It has been shown that the secure key distribution is possible up to the error Q _c in the asymptotic limit of a large number of bases.

PACS: 03.65.Hk, 03.67.Dd

Received: 22.06.2009
Revised: 07.08.2009

 English version: Journal of Experimental and Theoretical Physics Letters, 2009, 90:7, 548–554

Bibliographic databases:

• 
• 
•