Laser-based processes for metals are considered to be particularly versatile in industry. Lasers can be used, for example, to ...

The US Defense Advanced Research Projects Agency (DARPA) has achieved a major milestone in wireless energy transmission. The ...

By using paired, offset optical combs and RF electronics, researchers devised a unique atomic-clock architecture.

One of the most profound open questions in modern physics is: "Is gravity quantum?" The other fundamental ...

It looks like a prop from a science fiction film, maybe something Han Solo would use in a galaxy far, far away. But the HELMA ...

An optical lattice is a periodic light crystal constructed from the standing-wave interference patterns of laser beams. It can be used to store and manipulate quantum degenerate atoms and is an ideal ...

Optical lattice clocks (OLCs) are the most precise timekeeping devices ever developed, surpassing traditional atomic clocks in accuracy. They work by trapping neutral atoms, such as strontium or ...

To study this intersection, the researchers used optical lattice clocks, the most accurate timekeepers ever created. They trapped thousands of strontium atoms vertically in grids of laser light.

Within an optical lattice clock, atoms are trapped in a “lattice” potential formed by laser beams and are manipulated with precise control of quantum coherence and interactions governed by ...

Another laser then induces an electron transition ... The key limiting factor in an optical lattice clock is blackbody radiation, says Jun Ye, lead researcher of the JILA lab.

Credit: Physikalisch-Technische Bundesanstalt In an optical atomic clock, atoms are irradiated by laser light. If the laser has the correct ... crystal clock was compared with the strontium lattice ...

Optical atomic clocks use laser light to excite atoms ... These included two optical clocks – a single-ion ytterbium clock and a strontium lattice clock – as well as a caesium fountain clock, which is ...