Nonreciprocally manipulating light phase while maintaining bi-directional transmission amplitude, by coupling microwave photons with magnons

https://phys.org/news/2025-06-nonreciprocal-cavity-magnonics-device.html

"alters light pulse velocity without compromising transmission efficiency.... hybridized system: dielectric resonator's photon mode/ magnetic yttrium iron garnet sphere's magnon mode, where magnon mode's chirality is harnessed, inducing nonreciprocity enabled by an additional dissipative coupling introduced via common microstrip... light allowed propagation in both directions but at different speeds... high-speed microwave communication, quantum information processing, neuromorphic computing"