"Time-Squeezed Light Waves Reveal Unexpected Physics"

Physicists have demonstrated that a single mirror that rapidly turns on and off causes interference in a laser pulse, making it change colour, adding a new twist to the classic double-slit experiment. The rapid switching of the mirror shows that certain materials can change their optical properties much faster than previously thought possible, which could open new paths for building devices that handle information using light rather than electronic impulses. The researchers have shown that it is “possible to change the properties of ITOs very quickly”.