Generalized measurements in eight-port homodyne detection
Alfredo Luis, Jan Peřina · Quantum and Semiclassical Optics Journal of the European Optical Society Part B · 1996
We examine the eight-port homodyne detector when there is a vacuum at two of the input ports. It can then be described as a generalized measurement on the other two fields. We derive the class of two-field operators whose statistics can be deduced from the measurement for different choices of beamsplitters.