A standard atomic clock takes a beam of atoms that ... will be more precise than the same ruler with 4 marks. While a cesium clock may be off one second in 100 million years, the optical clocks ...

With access to a 10-MHz timebase from a cesium fountain atomic clock — no less a clock than the one that’s used to define the SI second, by the way — [Daniel] looked for ways to sync the ...

The size, power, and other metrics of a latest-generation chip-scale atomic clock.

The invention – called the optical lattice clock – is a thousand times more accurate than cesium atomic clocks used for international timekeeping and is a contender for redefining how long a ...

Optical lattice clocks, the pinnacle of timekeeping, are key to exploring the relationship between quantum mechanics and ...