Quantum clocks break energy limits, unlocking ultra-precise timekeeping with far-reaching tech, AI, and navigation impacts.

In this work, a rubidium fountain clock through an 84km commercial optical fiber link was used to steer the atomic time scale generated by a clock ensemble with 2 hydrogen masers and 8 high ...

We report on the development of a long-term laser diode aging test bench that measures the spectral behavior of laser diodes over several years, in view of their applications in space Rb atomic clocks ...

“The optical clock community is strongly motivated to obtain the best possible set of measurements before the SI second is ...

Quantum tunnelling — when a particle skips through a barrier that classical physics would forbid — happens faster when objects have less energy, find physicists who worked out a way to probe photons ...

Nuclear energy is the answer to soaring AI-driven power demand—offering reliable, carbon-free electricity for nonstop digital ...