Reversible optical to microwave quantum interface
  We describe a reversible quantum interface between an optical and a microwave field using a hybrid device based on their common interaction with a micro-mechanical resonator in a superconducting circuit. We show that, by employing state-of-the-art opto-electro-mechanical devices, one can realise an effective source of (bright) two-mode squeezing with an optical idler (signal) and a microwave signal, which can be used for high-fidelity transfer of quantum states between optical and microwave fields by means of continuous variable teleportation. 
Sh. Barzanjeh, M. Abdi, G. J. Milburn, P. Tombesi, and D. Vitali
quant-ph cond-mat.mes-hall