Signal Detection in the Optical Band by a Photo-Receiver With a Quantum Input Amplifier

A description is given of a receiver consisting of a quantal amplifier and a photodetector. An expression is found for the generating function of the distribution of the number of photoelectrons at the receiver output for a Poisson distribution of the number of photons at its input. The working characteristic of a Neyman–Pearson detector and an operating algorithm for it are obtained for this case.