Atom-mirror cooling and entanglement using cavity Electromagnetically   Induced Transparency
  We investigate a hybrid optomechanical system comprised of a mechanical oscillator and an atomic 3-level ensemble within an optical cavity. We show that a suitably tailored cavity field response via Electromagnetically Induced Transparency (EIT) in the atomic medium allows for strong coupling of the mechanical mirror oscillations to the collective atomic ground-state spin. This facilitates ground-state cooling of the mirror motion, quantum state mapping and robust atom-mirror entanglement even for cavity widths larger than the mechanical oscillator frequency. 
Claudiu Genes, Helmut Ritsch, Michael Drewsen and Aur\'elien Dantan
quant-ph