Macroscopic tunneling of a membrane in an optomechanical double-well   potential
  The macroscopic tunneling of an optomechanical membrane is considered. A cavity mode which couples quadratically to the membranes position can create highly tunable adiabatic double-well potentials, which together with the high Q-factors of such membranes render the observation of macroscopic tunneling possible. A suitable, pulsed measurement scheme using a linearly coupled mode of the cavity for the verification of the effect is studied. 
L. F. Buchmann, L. Zhang, A. Chiruvelli, P. Meystre
quant-ph