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

These clocks, based on quantum transitions in atoms like cesium and rubidium ... Ongoing advancements in chip-scale atomic ...

Abstract: This Special Issue of IEEE Journal on Emerging and Selected Topics in Circuits and Systems (JETCAS) is devoted to advancing the field of chip and package-scale communications across diverse ...

Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745 Jena, Germany Abbe Center of Photonics and Faculty of Physics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena ...

A new atomic clock ... Known as NIST-F4, the clock is at the Boulder, Colorado, campus of the National Institute of Standards and Technology (NIST). The clock relies on cesium atoms, which ...

resonator for application in a new type of chip-scale atomic clock (CSAC). Near the half-hyperfine frequency of 133 Cs (4.596...GHz), the NTL oscillator provides a peak RF output power up to 14 dBm, ...

This issue of the Bulletin of the Atomic Scientists is devoted to lessons learned from the recent COVID pandemic—and how to stop or constrain the next pandemic, by buttressing public support for ...

This study demonstrates a compact optical modulation platform that enables real-time, high-resolution spectroscopy using sub-MHz interleaved combs generated via chip-scale acousto-optic phase ...

The package includes two extremely accurate atomic clocks – a caesium fountain clock and a hydrogen maser clock – both of which use the vibration frequency of atoms as a kind of 'pendulum' to ...

NIST scientists Greg Hoth (left) and Vladislav Gerginov work on NIST-F4, NIST’s new cesium fountain clock, one of the most precise atomic clocks ever created. (Image credit: R. Eskalis/NIST) But ...