Scientists developed a highly accurate optical ion clock, improving time measurement precision by 1,000 times.

In an optical atomic clock, atoms are irradiated with laser light. If the laser has exactly the right frequency, the atoms change their quantum mechanical state. All external influences on the atoms ...

What Katori proposed in the optical lattice clock was to measure the transition in energy states among a batch of neutral strontium atoms, laser-cooled and trapped into a lattice formed by laser ...

Today, the world’s most precise atomic clocks are the strontium optical lattice clocks created by Jun Ye’s group at JILA in Boulder, Colorado. These are accurate to within a second in the age of the ...

Two further optical and one microwave clock systems of PTB participated in the comparisons: a single-ion ytterbium clock, a strontium lattice clock, and a cesium fountain clock. The ratio of the ...

Accurate frequency measurements of a narrow optical clock transition in 171 Yb atoms trapped in an optical lattice establish this system as a serious contender in the quest to develop increasingly ...

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 ...