IEEE Spectrum October 10, 2018
Researchers at the University of Maryland injected light into a chip containing an array of miniscule silicon loops arranged in a way that always allows the light to travel undisturbed around the edge of the chip, even if fabrication defects are present. The light circulates around each loop thousands of times before moving on to a neighboring loop. The relatively long journey is necessary to get many pairs single photons out of the silicon chip. Their quantum light source reliably produced high quality, single-color photons time and again, whereas the conventional chip’s output was more unpredictable. Such light sources will likely be important for future quantum information devices as well as further understanding the mysteries of quantum physics…read more. TECHNICAL ARTICLE
Credit: [IEEE Spectrum]