This article reviews recent developments in tests of fundamental physics using atoms and
molecules, including the subjects of parity violation, searches for permanent electric dipole …

Abstract The Second Workshop on Extreme Precision Radial Velocities defined circa 2015
the state of the art Doppler precision and identified the critical path challenges for reaching …

Singly ionized ytterbium, with ultranarrow optical clock transitions at 467 and 436 nm, is a
convenient system for the realization of optical atomic clocks and tests of present-day …

Atomic clocks based on laser-cooled atoms are widely used as primary frequency
standards. Deploying such cold atom clocks (CACs) in space is foreseen to have many …

Chip-scale atomic devices combine elements of precision atomic spectroscopy, silicon
micromachining, and advanced diode laser technology to create compact, low-power, and …

The detection of variations of fundamental constants of the Standard Model would provide
us with compelling evidence of new physics, and could lift the veil on the nature of dark …

The pursuit of ever more precise measures of time and frequency motivates redefinition of
the second in terms of an optical atomic transition. To ensure continuity with the current …

Improvements of the systematic uncertainty, frequency instability, and long-term reliability of
the two caesium fountain primary frequency standards CSF1 and CSF2 at PTB (Physikalisch …

We experimentally investigate an optical frequency standard based on the 467 nm (642
THz) electric-octupole reference transition S 1/2 2 (F= 0)→ F 7/2 2 (F= 3) in a single trapped …

A bstract We propose an approach to search for axion dark matter with a specially designed
superconducting radio frequency cavity, targeting axions with masses ma≲ 10− 6 eV. Our …