  Two oscillators coupled to a two-level system which in turn is coupled to an
infinite number of oscillators (reservoir) are considered, bringing to light
the occurrence of synchronization. A detailed analysis clarifies the physical
mechanism that forces the system to oscillate at a single frequency with a
predictable and tunable phase difference. Finally, the scheme is generalized to
the case of $N$ oscillators and $M(<N)$ two-level systems.
