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 to observe the interference of up to eight photons in 16 modes, all recorded only with one detector which considerably reduced the physical overhead previously needed for achieving equivalent tasks. According to the researchers their results can form the basis for a future universal photonics quantum processor operating in a single spatial mode… read more. Open Access TECHNICAL ARTICLEÂ
Time-bin multiphoton interferometric network… Credit: SCIENCE ADVANCES, 19 Apr 2024, Vol 10, Issue 16