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Proceedings Paper

Homodyne detection for quantum key distribution: an alternative to photon counting in BB84 protocol
Author(s): M. B. Costa e Silva; Q. Xu; S. Agnolini; P. Gallion; F. J. Mendieta
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Paper Abstract

This paper presents the principles and experimental results of an optical fiber QKD system operating at 1550 nm, and using the BB84 protocol with QPSK signals. Our experimental setup consists of a time-multiplexed super-homodyne configuration using P.I.N detectors in a differential scheme as an alternative to avalanche photon counting. Transmission over 11km of optical fiber has been done using this detection scheme and major relevant characteristics such as noise, quantum efficiency and bit error rate (BER) are reported.

Paper Details

Date Published: 8 September 2006
PDF: 11 pages
Proc. SPIE 6343, Photonics North 2006, 63431R (8 September 2006); doi: 10.1117/12.707785
Show Author Affiliations
M. B. Costa e Silva, École Nationale Supérieure des Télécommunications, CNRS LTCI (France)
Q. Xu, École Nationale Supérieure des Télécommunications, CNRS LTCI (France)
S. Agnolini, École Nationale Supérieure des Télécommunications, CNRS LTCI (France)
P. Gallion, École Nationale Supérieure des Télécommunications, CNRS LTCI (France)
F. J. Mendieta, Ctr. de Investigación Científica y de Educación Superior de Ensenada (Mexico)


Published in SPIE Proceedings Vol. 6343:
Photonics North 2006

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