Entangled-Photon Coincidence Fluorescence Imaging
  We extend entangled coincidence (ghost) imaging to fluorescent samples. Given the entangled photon correlation, one photon of the pair carries information on where the other photon has been absorbed and has produced fluorescence in a sample. Fluorescent molecules serve as ''detectors breaking'' the entanglement. 
Giuliano Scarcelli, Seok Hyun Yun