Phys.org  September 22, 2021 Based on light-matter coupling, an international team of researchers (Russia, Switzerland, Germany, UK) created an optical switch which in a proof-of-principle demonstration achieved switching with just one photon at room temperature. The switch could act as a component that links devices by shuttling data between them in the form of optical signals, and serve as an amplifier, boosting the intensity of an incoming laser beam by a factor of up to 23,000. The device relies on two lasers to set its state to “0” or “1” and to switch between them. The switching occurs inside a […]