Highway instead of a racetrack: strong coupling of light and sound in an optical fiber

https://www.eurekalert.org/news-releases/1148069

Summary: Scientists achieved strong quantum coupling between optical signals traveling continuous optical fibers and acoustic vibrations during single pass without micro-resonator cavities. Coupling light sound continuously inside standard glass fiber waveguides enables scalable optical signal processing, quantum memory buffers, non-reciprocal optical components directly compatible with existing telecommunication fiber networks.