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With the aid of the solutions of the Quantum Langevin equations, we havecalculated the Q-functions for the two-mode coherent and subharmonic cavitylight beams. We have then determined the Q-function for the superposed two-modecoherent and subharmonic cavity light beams. With the help of the pertinentQ-functions for cavity light beams, we determined the photon statistics,quadrature statistics, and entanglement. we have obtained that the superposedtwo-mode coherent and subharmonic cavity light beams are in a squeezed stateand the squeezing occurs in the plus quadrature. Besides, our analysis showsthat at steady state and at threshold, the superposed two-mode coherent andsubharmonic light beams have a maximum squeezing of $25\%$ below the two-modevacuum-state level. We have also clearly shown that the superposed two-modelight beam is entangled at steady-state and threshold and the entanglementturned out to be observed in the highly correlated squeezed photons with $75\%$degree of entanglement.

Entanglement of a cavity light produced by a superposed two-mode coherent and subharmonic light