When world-leading teams join forces, new findings are bound to be made. This is what happened when quantum physicists from ...

For almost a century, measurements have indicated that a significant proportion of matter in the universe consists of unknown ...

For almost a century, measurements have indicated that a significant proportion of matter in the universe consists of unknown dark matter, which ...

If the laser has the correct frequency ... For efficient cooling, ytterbium ions are added to the crystal." One of the challenges was the development of an ion trap that provides high-accuracy ...

If the laser has exactly the right frequency ... “We use indium ions because of their favorable properties for achieving high levels of accuracy. Ytterbium ions are also added to the crystal for ...

Abstract: We propose and experimentally demonstrate a terahertz (THz) source based on optical rectification in lithium niobate wafers driven by an ultrafast ytterbium laser. Terahertz pulses with a ...

compared with 1.2 eV in ytterbium-doped solids. Weighing against this advantage are two other considerations. First is the choice of the pump laser, with fewer sources readily available near 0.6 eV.

he performed groundbreaking experiments on a new optical atomic clock based on laser-cooled and -trapped ytterbium atoms. His research interests include atomic, molecular and optical (AMO) physics, ...

For instance, one study reported a novel THz source that achieved a record efficiency of 1.3% and generated 74 mW of average power using a 400 μJ ytterbium laser combined with a unique pulse ...

When two ytterbium atoms absorb near-infrared photons ... doped with thulium – and were discovered by the team in 2021. The sensing process uses a laser tuned off-resonance from any transition from ...

For efficient cooling, ytterbium ions are added to the crystal,” explains ... that ensures the ions maintain specific positions within the crystal structure, using laser cooling techniques to keep the ...