Performance of photon-pair quantum key distribution systems
Zachary Walton, Alexander V. Sergienko, Mete Atatüre, Bahaa E. A. Saleh, Malvin Carl Teich · Journal of Modern Optics · 2001
We analyse the quantitative improvement in performance provided by a novel quantum key distribution (QKD) system that employs a correlated photon source (CPS) and a photon-number resolving detector (PNR). Calculations suggest that given current technology, the CPS/PNR implementation offers an improvement of several orders of magnitude in secure bit rate over previously described implementations.