We compare the principles and experimental results of two different QPSK signal detection configurations, photon counting and super homodyning, for applications in fiber-optic Quantum Key Distribution (QKD) systems operating at telecom wavelength, using the BB84 protocol.
@article{arxiv.quant-ph/0611123,
title = {Photon Counting and Super Homodyne Detection of Weak QPSK Signals for Quantum Key Distribution},
author = {Q. XU and M. B. Costa e Silva and S. Agnolini and P. Gallion and F. J. Mendieta},
journal= {arXiv preprint arXiv:quant-ph/0611123},
year = {2007}
}
Comments
2 pages, 3 figues, EOS Annual Meeting 2006, Topical Meeting on Extreme Optics (QEOD/EPS), Paris, Oct. 2006