The even and odd coherent states are generalized for the multimode case. The explicit forms for the photon distribution, Q function, and Wigner function are derived. In particular, it is shown that for the two-mode case there exist strong correlations between these modes, under certain conditions, which are responsible for two-mode squeezing in the case of even coherent states.

• Received 7 March 1994

DOI:https://doi.org/10.1103/PhysRevA.50.1942