Since the first proof-of-principle experiments over 25 years ago, atom interferometry has
matured to a versatile tool that can be used in fundamental research in particle physics …

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 …

Quantum mechanics governs the microscopic world, where low mass and momentum reveal
a natural wave–particle duality. Magnifying quantum behaviour to macroscopic scales is a …

Owing to the low-gravity conditions in space, space-borne laboratories enable experiments
with extended free-fall times. Because Bose–Einstein condensates have an extremely low …

In contrast to light, matter-wave optics of quantum gases deals with interactions even in free
space and for ensembles comprising millions of atoms. We exploit these interactions in a …

According to the mean-field theory a condensed Bose-Bose mixture collapses when the
interspecies attraction becomes stronger than the geometrical average of the intraspecies …

Measuring gravity from an aircraft or a ship is essential in geodesy, geophysics, mineral and
hydrocarbon exploration, and navigation. Today, only relative sensors are available for …

The quantum superposition principle allows massive particles to be delocalized over distant
positions. Though quantum mechanics has proved adept at describing the microscopic …

Atomtronics is an emerging field that aims to manipulate ultracold atom moving in matter-
wave circuits for fundamental studies in both quantum science and technological …

We propose in this White Paper a concept for a space experiment using cold atoms to
search for ultra-light dark matter, and to detect gravitational waves in the frequency range …