Phys.org  April 19, 2024 The polarization of single photons are used as addressable degrees of freedom for turning the interference of nonclassical states of light into practical applications. However, the scale-up for the processing of a large number of photons of these architectures is very resource-demanding due to the rapidly increasing number of components, such as optical elements, photon sources, and detectors. An international team of researchers (Austria, Italy, Belgium) demonstrated a resource-efficient architecture for multiphoton processing based on time-bin encoding in a single spatial mode. They used an efficient quantum dot single-photon source and a fast programmable time-bin interferometer […]