Practical Free-Space Quantum Cryptography

Autor:	Steve K. Lamoreaux, William T. Buttler, George L. Morgan, Jane E. Nordholt, G. G. Luther, C. M. Simmons, C. G. Peterson, Paul G. Kwiat, Richard J. Hughes
Rok vydání:	1999
Předmět:	Physics Optical path Computer engineering Quantum cryptography business.industry Rekeying Electrical engineering Parity (physics) Eavesdropping Quantum key distribution Error detection and correction business Parity bit
Zdroj:	Quantum Computing and Quantum Communications ISBN: 9783540655145 QCQC
DOI:	10.1007/3-540-49208-9_17
Popis:	An experimental free-space quantum key distribution (QKD) system has been tested over an outdoor optical path of ~ 1 km under nighttime conditions at Los Alamos National Laboratory. This system employs the Bennett 92 protocol; here we give a brief overview of this protocol, and describe our experimental implementation of it. An analysis of the system efficiency is presented, as well as a description of our error detection protocol, which employs a two-dimensional parity check scheme. Finally, the susceptibility of this system to eavesdropping by various techniques is determined, and the effectiveness of privacy amplification procedures is discussed. Our conclusions are that free-space QKD is both effective and secure; possible applications include the rekeying of satellites in low earth orbit.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::229a9d6cf37bb4c1e5cbf94ac44386e5 https://doi.org/10.1007/3-540-49208-9_17 Zobrazit plný text záznamu