Integrating a QPSK Quantum Key Distribution Link
M. B. Costa e Silva, Qing Xu, S. Agnolini, Sylvain Guilley, J.-L. Danger, P. Gallion, Francisco Javier Mendieta · 2006
We present the integration of the optical and electronic subsystems of a BB84-QKD fiber link. A high speed FPGA MODEM generates the random QPSK sequences for a fiber-optic delayed self-homodyne scheme using APD detectors.