Near-optimal quantum receivers for the coherent state discrimination
Masahiro Takeoka, Kenji Tsujino, Masahide Sasaki, Alexander I. Lvovsky · AIP conference proceedings · 2009
We propose practical near‐optimal quantum receivers for the binary phase shift keyed coherent signals to overcome the homodyne limit in all areas of the signal power. Our schemes consist of Gaussian operations and photon detection and do not require realtime electrical feedback. We numerically show that the scheme is feasible with the current technology.