Scientists Built a Programmable Chip That Can Slow Light on Command

Researchers at Seoul National University and the University of Seoul built a programmable photonic chip that can slow and control light on demand.

The device uses coupled-resonator-induced transparency to dynamically delay and shape optical signals instead of relying on fixed-delay hardware.

The chip could improve synchronization and cut power use in AI hardware, data centers, and advanced communication systems.

The work was published in Advanced Science and points to more flexible optical computing and photonic integration.