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 …

General Relativity is today the best theory of gravity addressing a wide range of phenomena.
Our understanding of physical laws, from cosmology to local scales, cannot be properly …

Atom interferometers have been developed in the last three decades as new powerful tools
to investigate gravity. They were used for measuring the gravity acceleration, the gravity …

Observers in relative motion or at different gravitational potentials measure disparate clock
rates. These predictions of relativity have previously been observed with atomic clocks at …

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 …

A major challenge for gravitational-wave (GW) detection in the μ Hz band is engineering a
test mass (TM) with sufficiently low acceleration noise. We propose a GW detection concept …

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

We evaluate the sensitivity of a dual cloud atom interferometer to the measurement of
vertical gravity gradient. We study the influence of most relevant experimental parameters on …

We present a new measurement of the Newtonian gravitational constant G based on cold-
atom interferometry. Freely falling samples of laser-cooled rubidium atoms are used in a …

We report on a precision measurement of gravitational acceleration using ultracold strontium
atoms confined in an amplitude-modulated vertical optical lattice. An uncertainty Δ g/g≈ 10 …