Phys.org November 23, 2022
Experiments in the past have demonstrated Anderson localization in optical fibers, classical or conventional light, in two dimensions while propagating it through the third dimension. An international team of researchers (Spain, USA – industry, Italy) engineered the optical setup to send the quantum light through the phase-separated Anderson localization fiber and detected its arrival with the single-photon avalanche diode (SPAD) array camera. It enabled them not only to detect and identify them as pairs, as they arrived at the same time. As the pairs are quantum correlated, knowing where one of the two photons is detected the other photon’s location can be determined. The team verified this correlation right before and after sending the quantum light through phase-separated fiber (PSF), successfully showing that the spatial anti-correlation of the photons was indeed maintained. According to the researchers their study shows that their approach is potentially attractive for scalable fabrication for quantum imaging and quantum communications…read more. Open Access TECHNICAL ARTICLEÂ
Schematic overview of the experiment. Credit: Communications Physics volume 5, Article number: 261 (2022)Â