Phonon-mediated coupling between quantum dots through an off-resonant   microcavity
  We present experimental results showing phonon-mediated coupling between two quantum dots embedded inside a photonic crystal microcavity. With only one of the dots being spectrally close to the cavity, we observe both frequency up-conversion and down-conversion of the pump light via a $\sim1.2$ THz phonon. We demonstrate this process for both weak and strong regimes of dot-cavity coupling, and provide a simple theoretical model explaining our observations. 
Arka Majumdar, Michal Bajcsy, Armand Rundquist, Erik Kim, Jelena   Vuckovic
cond-mat.mes-hall quant-ph