A weak coherent source used in a practical QKD system emits pulses with mean photon number
PHYSICS · Subjective · Fermi University Physics · Optics & Photonics · Quantum Information & Technology · Quantum information theory and communication
Quantum Information and Technology, Ch Quantum key distribution and quantum networks
Problem
A weak coherent source used in a practical QKD system emits pulses with mean photon number μ=0.4. Find the fraction of non-empty pulses that contain two or more photons.