Unconditionally secure quantum key distribution over 50km of standard telecom fibre

Preprint

22 December 2004

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.quant-ph/0412173

Abstract

We demonstrate a weak pulse quantum key distribution system using the BB84 protocol which is secure against all individual attacks, including photon number splitting. By carefully controlling the weak pulse intensity we demonstrate the maximum secure bit rate as a function of the fibre length. Unconditionally secure keys can be formed for standard telecom fibres exceeding 50 km in length.

Keywords

PROTOCOL WHICH IS SECURE
QUANTUM KEY DISTRIBUTION
UNCONDITIONALLY SECURE
DISTRIBUTION SYSTEM
STANDARD TELECOM
SECURE QUANTUM
TELECOM FIBRE

All Related Versions

Version 1, 2004-12-22, ArXiv
Published version: Electronics Letters, 40 (25), 1603.

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