MIGA is an interferometer for the observation of the gravitational field of the Earth. It is composed of the construction of a new infrastructure that makes it possible to study the deformations of space-time and gravitation. By using a new approach to measuring these constraints, based on quantum mechanics and cold atoms, this infrastructure will allow us to better understand the variations of the Earth’s gravity field.
The applications of the MIGA project extend from the monitoring of changes in the Earth’s gravitational field to providing a new tool to detect gravitational waves. By combining geophysics and basic physics into a single infrastructure, MIGA constitutes an unprecedented step in the understanding of geophysical phenomena and will in the long term improve the sensors of current and future gravitational waves.
The research results will find applications in the monitoring of the environment by improving the predictions of seismic hazards, the anticipation of their consequences and the measures that should be taken in order to save lives or protect critical infrastructures.
MIGA will be the first step to a larger and more ambitious project which could lead to a future European infrastructure. The development, scientific use and technical implementation of this first version of the gravitational antenna will pave the way to a more sensitive version which will benefit from the advances of the current research in cold atom interferometry. This project and its anticipated changes will guarantee France and Europe a position on the cutting edge of instruments in this area and leadership in key quantum technologies.
This project, seeking to use quantum physics for gravitational detection, will make it possible to develop new breakthrough technologies for observation of the Earth and geolocation. French companies will be able to have these technologies before other competitors and thus be more competitive.