Amplified opto-mechanical transduction of virtual radiation pressure
  Here we describe how, utilizing a time-dependent opto-mechanical interaction, a mechanical probe can provide an amplified measurement of the virtual photons dressing the quantum ground state of an ultra strongly-coupled light-matter system. We calculate the thermal noise tolerated by this measurement scheme, and discuss a range of experimental setups in which it could be realized. 
Mauro Cirio, Kamanasish Debnath, Neill Lambert, Franco Nori
quant-ph