https://www.hannover.de/en/en/view/content/602121/full/1/6970142016-09-22T15:00:45+02:00Max Mustermannmax@mustermann.dehttps://www.hannover.de/en/en/view/content/602121/full/1/6970142016-09-22T15:00:45+02:00Researchers from the Max Planck Institute for Gravitational Physics and the Leibniz University of Hannover have managed to generate light with special quantum properties that enables for the first time a new method to measure photodetector quantum efficiency.