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 ...

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 ...

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 ...

The strontium optical lattice clock is the first of its kind to be ... one hundred times more precise than the traditional cesium atomic clocks that currently define the second.

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