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États de diffusion à trajectoires classiques

- Porteur : Kuhl Ulrich

- Collaborateurs LPMC : Legrand Olivier, Mortessagne Fabrice

- Collaborateurs extérieurs : Rotter S. (TU Vienna, Autriche, Porteur du Projet en Autriche)

- Doctorants/Post-docs : Boehm Julian

- Soutiens financiers : ANR GePartWave (ANR-12-IS04-0004-01)

- Description :

In a recent work by one of the project collaborators it was shown how to systematically generate particle-like scattering states in wave transport through complex scattering systems [1]. These beam-like states have a number of interesting properties like a highly collimated wave function and deterministic values of transmission through a system. In particular, as the construction of such states requires only the knowledge of the system’s scattering matrix (rather than all of its geometric details) this new theoretical concept promises to be a very useful tool for the experiment [2]. These special wave states can be useful in any situation in which a wave signal needs to be transmitted from one point to another without losing part of the signal to the environment. Such properties are of importance for saving power in the signal transmission, for security issues (to avoid eavesdropping), for improving the signal quality as well as for the focusing of waves on a small spot. The particle-like scattering states arte realized only by an incident wave shaping in the incoming lead, which needs to be a multimode lead. For an experimental realization additionally losses, i.e., absorption and additional open channels, have to be taken into account in the theoretical ansatz for the incident wave shaping as well as noise within the originally measured scattering matrix. This work is a joined ANR International Blanc project with Stefan Rotter from Austria.

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MOSAIQ, Physique Mésoscopique