MIGA: Combining laser and matter wave interferometry for mass distribution monitoring and advanced geodesy

Understand

The Matter-Wave laser Interferometer Gravitation Antenna, MIGA, will be a hybrid instrument composed of a network of atom interferometers horizontally aligned and interrogated by the resonant field of an optical cavity.

• This detector will provide measurements of sub Hertz variations of the gravitational strain tensor.
• MIGA will bring new methods for geophysics for the characterization of spatial and temporal variations of the local gravity field and will also be a demonstrator for future low frequency Gravitational Wave (GW) detections.
• MIGA will enable a better understanding of the coupling at low frequency between these different signals.