The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics

, Volume 30, Issue 1, pp 143–148

Quantum key distribution over 30 km of standard fiber using energy-time entangled photon pairs: a comparison of two chromatic dispersion reduction methods


DOI: 10.1140/epjd/e2004-00080-8

Cite this article as:
Fasel, S., Gisin, N., Ribordy, G. et al. Eur. Phys. J. D (2004) 30: 143. doi:10.1140/epjd/e2004-00080-8


We present a full implementation of a quantum key distribution system using energy-time entangled photon pairs over a 30 km standard telecom fiber quantum channel. Two bases of two orthogonal states are implemented and the set-up is shown to be robust to environmental constraints such as temperature variation. Two different ways to manage chromatic dispersion in the quantum channel are discussed.

Copyright information

© Springer-Verlag Berlin/Heidelberg 2004

Authors and Affiliations

  1. 1.Group of Applied PhysicsUniversity of GenevaGeneva 4Switzerland