An international team led by the Institute of Materials Science (ICMUV) of the University of Valencia has developed an optical (quantum) switch that modifies the emission properties of photons, the particles of electromagnetic radiation. The new device works with ultra-fast switching times and very low energy consumption and, in comparison to other designs, it can be implemented in a variety of semiconductor platforms and is of great application in current quantum technologies.
Source:
https://phys.org/news/2020-02-multiplatform-photon-application-quantum-technology.html