Described in Nature Photonics,* NIST's low-noise apparatus is a new application of optical frequency combs, tools based on ultrafast lasers for precisely measuring optical frequencies, or colors, of ...

A high-level schematic of the photonic integrated chip, developed by the Gaeta lab, for all-optical optical frequency division, or OFD—a method of converting a high-frequency signal to a lower ...

Researchers have used state-of-the-art atomic clocks, advanced light detectors, and a measurement tool called a frequency comb to boost the stability of microwave signals 100-fold. This marks a giant ...

Quantum particles can work together to produce powerful signals. However, those signals are unstable and usually vanish almost instantly. For decades, one striking example of this problem has been ...

Optoelectronic oscillators (OEOs) represent a pivotal technology at the intersection of photonics and microwave engineering. By exploiting the long delay lines provided by optical fibres and high‐Q ...

Modern-day communications rely on both fibre-optic cables and wireless radiofrequency (RF) microwave communications. Reaching higher data transmission capabilities is going to require technologies ...

Here’s the thing about radio signals. There is wild and interesting stuff just getting beamed around all over the place. Phrased another way, there are beautiful signals everywhere for those with ears ...

Armed with this level of performance, a new generation of microwave timekeeping opens the door for many scientific and technological advances Time and frequency standards are a key part of ...

Researchers at the National Institute of Standards and Technology (NIST) have used state-of-the-art atomic clocks, advanced light detectors, and a measurement tool called a frequency comb to boost the ...

The achievement provides a promising pathway towards small-footprint ultra-low-noise microwave generation for applications such as high-speed communication, atomic clocks, and autonomous vehicles. A ...