See Photo report
20200025_0006
© Frédérique PLAS / SYRTE / CNRS Photothèque

Arnaud Landragin, médaille de l'Innovation 2020 du CNRS

Reference

20200025_0006

Production year

2020

Max. size

48.77 x 32.51 cm / 300 dpi

Caption

Arnaud Landragin is awarded the CNRS 2020 Innovation Medal. CNRS research professor and director of the SYRTE (Systèmes de référence temps-espace) laboratory (CNRS/Sorbonne Université/Observatoire de Paris-PSL), he uses the quantum principle of wave-particle duality to split an atom into two waves with a laser. Gravity modifies the propagation of these two waves, and can be measured after their recombination. The scientist uses this to design cold-atom absolute gravimeters, which are sold by Muquans, the company he co-founded. He also simplified these systems with a pyramid reflector, a series of mirrors that allow just two lasers to perform the tasks of six. These devices have applications in the measurement of acceleration and gravitational fields, and, through their impact on local gravity, the probing of fluids and materials present underground.

CNRS Institute(s)

Regional office(s)

CNRS Images,

Our work is guided by the way scientists question the world around them and we translate their research into images to help people to understand the world better and to awaken their curiosity and wonderment.