Entangled state representation for two particles with unequal masses and the squeezed state generation

It was found that the entangled state representation of two particles with unequal masses can be directly derived by the Weyl correspondence and the technique of integration within an ordered product of operators. The entanglement properties can be achieved through its Schmidt decomposition. With this representation, a kind of new one- and two- combination squeezed state and corresponding squeezing operator was obtained.