A chip-scale integrated cavity-electro-optomechanics platform
  We present an integrated optomechanical and electromechanical nanocavity, in which a common mechanical degree of freedom is coupled to an ultrahigh-Q photonic crystal defect cavity and an electrical circuit. The sys- tem allows for wide-range, fast electrical tuning of the optical nanocavity resonances, and for electrical control of optical radiation pressure back-action effects such as mechanical amplification (phonon lasing), cooling, and stiffening. These sort of integrated devices offer a new means to efficiently interconvert weak microwave and optical signals, and are expected to pave the way for a new class of micro-sensors utilizing optomechanical back-action for thermal noise reduction and low-noise optical read-out. 
Martin Winger, Tim Blasius, Thiago P. Mayer Alegre, Amir H.   Safavi-Naeini, Se\'an Meenehan, Justin Cohen, S{\o}ren Stobbe,...
physics.optics quant-ph