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 …

The weak equivalence principle (WEP) is the cornerstone of general relativity (GR). Testing
it is thus a natural way to confront GR to experiments, which has been pursued for four …

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 …

The existence of a light or massive scalar field with a coupling to matter weaker than
gravitational strength is a possible source of violation of the weak equivalence principle. We …

In this paper, we study the local observational consequences of a violation of the Einstein
equivalence principle induced by models of light scalar dark matter (DM). We focus on two …

We present a new framework to study the time variation of fundamental constants in a model-
independent way. Model independence implies more free parameters than assumed in …

Cosmological observations indicate that dark matter makes up 85% of all matter in the
universe yet its microscopic composition remains a mystery. Dark matter could arise from …

Recent advances in optical atomic clocks and optical time transfer have enabled new
possibilities in precision metrology for both tests of fundamental physics and timing …

We report on the first Earth-scale quantum sensor network based on optical atomic clocks
aimed at dark matter (DM) detection. Exploiting differences in the susceptibilities to the fine …

We propose a new frequency standard based on a 4 f 14 6 s 6 p P 0 3-4 f 13 6 s 2 5 d (J= 2)
transition in neutral Yb. This transition has a potential for high stability and accuracy and the …