3 February 2004 Unselected quantum information as an effective tool for quantum cryptography
Author Affiliations +
Abstract
A novel quantum key distribution (QKD) protocol, based on all unselected states of a quantum system, which set the alphabet with continuous set of letters, is proposed. Employing all states of the Hilbert space leads to the maximal quantum uncertainty of transmitted states and therefore an eavesdropper receives the minimal amount of information. For the case of two-dimensional Hilbert space, our protocol allows secure transmission at the error rate higher than that one for the BB84-protocol and comparable with the characteristics of the best known QKD-protocols. However, with increasing the dimensionality of the Hilbert space the critical error rate for our protocol increases and in the limit of infinite-dimensional space the protocol becomes non-threshold.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Denis V. Sych, Denis V. Sych, Boris A. Grishanin, Boris A. Grishanin, Victor N Zadkov, Victor N Zadkov, } "Unselected quantum information as an effective tool for quantum cryptography", Proc. SPIE 5161, Quantum Communications and Quantum Imaging, (3 February 2004); doi: 10.1117/12.505033; https://doi.org/10.1117/12.505033
PROCEEDINGS
11 PAGES


SHARE
RELATED CONTENT

An improved quantum key distribution protocol
Proceedings of SPIE (September 03 2008)
Noise-resistant quantum key distribution protocol
Proceedings of SPIE (May 28 2004)
Quantum three-pass cryptography protocol
Proceedings of SPIE (September 13 2002)
Information security: from classical to quantum
Proceedings of SPIE (November 19 2012)
A simple secure quantum authorization scheme
Proceedings of SPIE (April 25 2007)
The secrecy capacity of practical quantum cryptography
Proceedings of SPIE (August 04 2003)

Back to Top