We investigate the feasibility of single and entangled photon-based quantum key distribution protocols at telecommunication wavelengths with two types of single photon detectors, namely InGaAs/InP and Silicon-APD, under various realistic conditions. The purpose of the current optical fiber-based simulation is to analyze the various performance parameters. In addition to these, we analyze the effect of possible attacks on the one and two weak decoy state protocols under investigation with the two deployed avalanche photodiodes. The simulation results obtained show that the one and two weak decoy states used in the entangled-based protocol at telecommunication wavelengths with considered attacks and under various industrial parameters outperforms the single photon-based quantum key distribution protocol. In addition, it is also observed that Silicon-APD (the avalanche photodiode) performs better than InGaAs/InP-APD when considering all the conditions.
Vishal Sharma (Sat,) studied this question.