Experimental quantum imaging distillation with undetected light

https://phys.org/news/2023-09-experimental-quantum-imaging-distillation-undetected.html

"photon illuminates object and its partner alone detected preventing measurements of coincidence events to reveal information of object sought after. also noise resilient... distillation or purification remove decoherence introduced by environment in quantum system... quantum imaging distillation with 1 and several photon pair degrees freedom... good performance even for noise intensities >250X quantum signal intensity... quantum holography with undetected light... spontaneous parametric down-conversion... quantum imaging, LIDAR"