The research activities of the LPMMC are centered on the condensed matter theory and on the theory of waves propagation in complex disordered media. The main research interests are:
- the strong Anderson localization
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The wave interferences may prevent waves to propagate: this is the strong Anderson localization. We investigate – analytically and numerically – this phenomenon for acoustical waves, light, micro-waves and cold atoms, in strong collaboration with experimentalists.
Team: Waves Participants : A. Minguzzi, V. Rossetto, S. Skipetrov, B. van Tiggelen, X. Deng, N. Cherroret, B. Kaas, S. Kawka |
- seismology & acoustics
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Mesoscopic methods are applied to acoustical and elastic waves untill seismical scale. We investigate transport and waves fluctuations, in comparison with experimental data.
Team: Waves Participants : B. van Tiggelen, D. Anache |
- the quantum optics
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We work on the modelization of disordered media with gain notably the « random laser » effect and the fluctuations due to the quantum origin of photons. A project about the fluctuations of vacuum under a magnetic field has started.
Team: Waves Participants : S. Skipetrov, B. van Tiggelen, S. Kawka |
- the quantum gases
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Quantum gases are model systems where interactions and geometry can be tuned. This opens fascinating perspectives for theorists to investigate various low-dimensional models, correlations effects and out-of-equilibrium properties.
Participants : F. Hekking, A. Minguzzi, P. Schuck, S. Skipetrov, B. van Tiggelen |
- the nano-electromechanics
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We study quantum and classical transport properties of electrons in nanometric mechanical systems (Nano Electro Mechanicals Systems). Electronic transport at this scale is strongly coupled to mechanical motion through the Coulombian interaction and gives rise to new physical phenomena. Potential applications of these systems as rapid and ultrasensitive probes are also very important.
Team: Mesoscopy
Participants : F. Pistolesi, G. Rastelli, N. Pauget |
- the mesoscopic superconductivity
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We study thermal and electronic transport properties (current and its fluctuations) of superconductors at the mesoscopic scale (grains, hybrid structures, Josephson junctions). Emphasis is placed on the coherence phenomenon (which manisfests itself through different effects such as the proximity effect or the Josephson effect), as well as on the study of devices with superconductors promising for the quantum computing.
Team: Mesoscopy Participants : T. Champel, F. Hekking, F. Pistolesi, P. Schuck, N. Didier |
- the quantum spin-electronics
| The present technology of semiconductors is based on the control of the charge. Nevertheless, the electron spin appears as a variable of alternative control, very interesting notably for the quantum information. We are interested in the dynamics and coherence of spin, as well as in transport phenomena related to spin in (artificial or molecular) nanostructures.
Team: Mesoscopy Participants : P. Simon |
- the statistical physics out of equilibrium
| The systems out of equilibrium, as the reaction-diffusion processes or moving interfaces, exhibit very rich critical phenomena whose theoretical description remains a challenge.
Team: Phases Participants : L. Canet |
- the magnetism in low dimensions
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The systems of low dimension show unusual – even exotic – quantum magnetic phases offen induced by the presence of strong correlations. We are interested in the phenomenon of orbital magnetism (quantum Hall effect) in two-dimensional electron gases as well as in the phenomenon of spin magnetism in various systems (electron gases doped by magnetic impurities, organic conductors, frustrated magnetic systems, etc.).
Participants : L. Canet, T. Champel, P. Simon, T. Ziman |
- polarization transport and anisotropies
| When they propagate, the waves polarization modes are differently influenced by the media or diffusers anisotropies. This may be translated by the emergence of a geometric phase. To take into account these anomalies, we use the tools of the field theory and of quantum mechanics and numerical methods with a vue of applications in optics or seismology.
Team: Waves Participants : V. Rossetto |
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