  We investigate the propagation of a pulse field in an optomechanical system.
We examine the question of advance of the pulse under the conditions of
electromagnetically induced transparency in the mechanical system contained in
a high quality cavity. We show that the group delay can be controlled by the
power of the coupling field. The time delay is negative which corresponds to
superluminal light when there is a strong coupling between the nano-oscillator
and the cavity.
