innovation for industry
Leti is a key player in atomic magnetometry: scalar magnetometers of the three last magnetic measurement missions (Champ, Oersted and Swarm) have been designed in our team. For the latter a technology based on laser pumping a diluted gas of helium-4 allowed to reach an unprecedented level of accuracy [1,2]. ( ESA, CNES)We are currently working on declinations of these magnetometers for brain imaging, addressing the diagnosis of epilepsy and other neurological disorders. For these applications an extremely low noise is the key feature.
Several works (notably in Polzik's and Romalis' groups) show that quantum advantages, notably spin squeezing and entanglement, can bring significant gains of noise to optically-pumped magnetometers. We are currently studying how to leverage these gains for further generations of helium-4 magnetometers for space exploration and neurological imaging.
THE QUANTUM LETI INITIATIVE
CEA is a French government-funded technological research organisation in four main areas: low-carbon energies, defense and security, information technologies and health technologies. A prominent player in the European Research Area, it is involved in setting up collaborative projects with many partners around the world.