  We propose that a pulsed quantum optomechanical system can be applied for the
problem of quantum parameter estimation, which targets to yield higher
precision of parameter estimation utilizing quantum resource than that using
classical methods. Mainly concentrating on the quantum Fisher information with
respect to the mechanical frequency, we find that the corresponding precision
of parameter estimation on the mechanical frequency can be enhanced by applying
applicable optical resonant pulsed driving on the cavity of the optome-
chanical system. Further investigation shows that the mechanical squeezing
resulting from the optical pulsed driving is the quantum resource used in
optimal quantum estimation on the frequency.
