The Photonic Chip That Can Relearn Its Job Without Being Rebuilt
A programmable lithium-niobate chip learns new ways to route light after fabrication, but speed, power use, and scale remain challenges.
photonic devices
A Glass Fan-Out Gives Tiny Atomic Sources a Fiber-Scale World
A glass waveguide bridges atomic-scale spacing to standard fibers, routing photons from 50 individually addressed rubidium atoms.