Atomic clocks are the basis upon which a second is defined. But there is a new kid on the block, the optical clock, which ...

BRAUNSCHWEIG, Germany — Time measurement is entering a new era. The next generation of atomic clocks uses laser light instead of microwaves to track time, oscillating about 100,000 times faster ...

Accurate frequency measurements of a narrow optical clock transition in 171 Yb atoms ... in the quest to develop increasingly accurate atomic clocks. The spectral resolution achieved in the ...

A standard atomic clock takes a beam of atoms that are in ... Optical clocks such as the aluminum ion, ytterbium, and strontium clocks have much higher resonance frequencies, high enough to ...

Our research focuses on the development of optical clocks using ultracold atomic systems. By tightly confining ytterbium in the ideal potential of a magic-wavelength optical lattice, the lattice clock ...

By tightly confining ytterbium in the ideal potential of a magic-wavelength optical lattice, the lattice clock pushes the frontiers of atomic timekeeping. We explore enhanced quantum control, ...

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

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 ...

(via Sabine Hossenfelder) In 2020, a group of MIT researchers detected an anomaly in the nuclei of ytterbium atoms. They said that the nuclei’s strange behavior might be indicative of a “dark force” ...

The clock hands are set by the Bulletin of the Atomic Scientists, a group formed by Manhattan Project scientists at the University of Chicago who helped build the atomic bomb but protested using it ...