Experimental signatures of the quantum-classical transition in a   nanomechanical oscillator modeled as a damped driven double-well problem
  We demonstrate robust and reliable signatures for the transition from quantum to classical behavior in the position probability distribution of a damped double-well system using the Qunatum State Diffusion approach to open quantum systems. We argue that these signatures are within experimental reach, for example in a doubly-clamped nanomechanical beam. 
Qi Li, Arie Kapulkin, Dustin Anderson, Shao Min Tan, Arjendu K.   Pattanayak
quant-ph cond-mat.mes-hall nlin.CD