In the world of physics, few discoveries challenge our intuition as much as the idea that light could travel at different speeds depending on its direction. For decades, efforts to demonstrate nonreciprocal group delay have been hindered by excessive losses and limited effects. Yet a recent breakthrough in cavity magnonics has achieved a significant demonstration of this phenomenon, without violating fundamental laws like the Kramers–Kronig relations. This discovery taps into the fascinating hybrid interaction between photons and magnons, leveraging magnism to manipulate light in ways previously out of reach.
Read MoreInterview: Jiguang Yao,PhD student at the University of Manitoba, Canada
