Chip-based integrated optical frequency combs highly stable, furthering compact, low-power, portable atomic clocks

https://phys.org/news/2026-10-chip-based-frequency-potential-portable.html

"chip-based microresonator frequency comb capable of generating ultra-stable optical references in a compact, microchip-scale footprint integrates nonlinear photonic waveguide architectures onto a silicon platform... replaces traditional, bulky benchtop laser setups without sacrificing precise frequency spacing... satellites, defense, mobile navigation units in GPS-denied environments, quantum sensing"