Dual-threshold Receiver for 1550nm Homodyne QPSK Quantum Key Distribution System
Qing Xu, Manuel Sabban, P. Gallion, Francisco Javier Mendieta · 2008
We present a dual-threshold balanced homodyne receiver for QPSK QKD system in which the strong reference is time-multiplexed with the weak signal pulses in optical fiber, we also report its experimental BER and post-detection efficiency.