Classical non-Gaussian state preparation through squeezing in an   opto-electromechanical resonator
  We demonstrate squeezing of a strongly interacting opto-electromechanical system using a parametric drive. By employing real-time feedback on the phase of the pump at twice the resonance frequency the thermo-mechanical noise is squeezed beyond the 3 dB instability limit. Surprisingly, this method can also be used to generate highly nonlinear states. We show that using the parametric drive with feedback on, classical number-like and cat-like states can be prepared. This presents a valuable electro-optomechanical state-preparation protocol that is extendable to the quantum regime. 
Menno Poot, King Y. Fong, Hong X. Tang
physics.optics cond-mat.mes-hall quant-ph