Quantum statistical properties of ideal phase sensitive receivers
W. H. Louisell, L. R. Walker, J. P. Gordon · Microwaves · 1963
There has been a great deal of work done in the past on, the quantum statistical properties of noise in linear amplifiers and attenuators. However, a complete statistical description of these devices for an input consisting of a signal plus Gaussian noise does not seem to be contained in the earlier work.