We derive the joint photon-number distribution for two-mode squeezed states with coherent amplitudes. For certain ranges of the parameters, the joint distribution exhibits nonclassical oscillations, which are the two-mode analog of the oscillations found in the single-mode case. These nonclassical oscillations are absent from the marginal distributions for each mode. The nonclassical features of the joint distribution may be explained using the interference–in–phase-space concept in four-dimensional phase space.

• Received 1 October 1990

DOI:https://doi.org/10.1103/PhysRevA.43.3854