  We discuss a model comprising two coupled nonlinear oscillators (Kerr-like
nonlinear coupler) with one of them pumped by an external coherent excitation.
Applying the method of nonlinear quantum scissors we show that the quantum
evolution of the coupler can be closed within a finite set of n-photon Fock
states. Moreover, we show that the system is able to generate Bell-like states
and, as a consequence, the coupler discussed behaves as a two-qubit system. We
also analyze the effects of dissipation on entanglement of formation
parametrized by concurrence.
