  We describe a scheme for entangling mechanical resonators which is efficient
also beyond the resolved sideband regime. It employs the radiation pressure
force of the squeezed light produced by a degenerate optical parametric
oscillator, which acts as a reservoir of quantum correlations (squeezed
reservoir), and it is effective when the spectral bandwidth of the reservoir
and the fields frequencies are appropriately selected. It allows for the steady
state preparation of mechanical resonatrs in entangled EPR states and can be
extended to the preparation of many entangled pairs of resonators which
interact with the same light field, in a situation in which the optomechanical
system realizes a star-like harmonic network.
