Atoms and light in dense or complex media
The experimental and theoretical research carried out within this area ranges from studies of helium in its gaseous, liquid, and solid phases, using optical or NMR (nuclear magnetic resonance) techniques, to investigations of light propagation and control in disordered systems. In helium studies, light is used as a tool to precisely characterize these different phases or to control their internal (spin) states. Conversely, controlling the propagation of light in complex media offers numerous potential applications in imaging and optical computing.
Teams
There are four teams in this division:
Polarised helium, quantum fluids and solids
The experimental activities of the Polarized Helium, Quantum Fluids and Solids team are exploring the behavior of the two stable isotopes of helium under various conditions. Study of metastable phases of solid and liquid 4He at cryogenic temperatures using optical methods, nuclear hyperpolarisation of 3He gas (pure or mixed with 4He) at room temperature and use of this gas as a probe for innovative developments in low-field NMR and MRI. As regards theory, in connection with the publication of books, current work focuses on some fundamental aspects of quantum theory.
Photonics, Information & Complexity
The Photonics, Information & Complexity team studies and controls the propagation of light in disordered systems, paving the way for new approaches in biological microscopy, battery imaging, quantum optics and imaging, as well as in computational imaging and optical computing for artificial intelligence.