Fundamental constants are a cornerstone of our physical laws. Any constant varying in
space and/or time would reflect the existence of an almost massless field that couples to …

In the last ten years extraordinary results in time and frequency metrology have been
demonstrated. Frequency-stabilization techniques for continuous-wave lasers and …

This paper presents a review of the current state of the art in the research field of cold and
ultracold molecules. It serves as an introduction to the focus issue ofNew Journal of Physics …

A method is proposed to cool down atoms in a harmonic trap without phase-space
compression as in a perfectly slow adiabatic expansion, ie, keeping the same populations of …

We propose a new light source based on having alkaline-earth atoms in an optical lattice
collectively emit photons on an ultranarrow clock transition into the mode of a high Q …

Optical atomic clocks promise timekeeping at the highest precision and accuracy, owing to
their high operating frequencies. Rigorous evaluations of these clocks require direct …

We give an overview of the work done with the Laboratoire National de Metrologie et
d'Essais-Systemes de Reference Temps-Espace (LNE-SYRTE) fountain ensemble during …

We propose two distinct atom interferometer gravitational wave detectors, one terrestrial and
another satellite based, utilizing the core technology of the Stanford 10 m atom …

Three distinct techniques exist for distributing an ultrastable frequency reference over optical
fibers. For the distribution of a microwave frequency reference, an amplitude-modulated …

The unprecedented precision of atom interferometry will soon lead to laboratory tests of
general relativity to levels that will rival or exceed those reached by astrophysical …