✦ LIBER ✦

Multiuser quantum key distribution over telecom fiber networks

✍ Scribed by Jan Bogdanski; Nima Rafiei; Mohamed Bourennane

Publisher: Elsevier Science
Year: 2009
Tongue: English
Weight: 172 KB
Volume: 282
Category: Article
ISSN: 0030-4018
DOI: 10.1016/j.optcom.2008.10.030

No coin nor oath required. For personal study only.

✦ Synopsis

We report five-user quantum key distribution (QKD) over switched fiber networks in both star and tree configurations, using the BB84-protocol [1] with phase encoding. Both setups implement polarization insensitive phase modulators, necessary for birefringent single mode fiber (SMF) networks. In both configurations we have achieved transmission distances between 25 km and 50 km with quantum bit error rates between 1.24% and 5.56% for the mean photon number l ¼ 0:1. The measurements have showed feasibility of multiuser QKD over switched fiber networks, using standard fiber telecom components.

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