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Accueil du site > Recherche > Thèmes > MOSAIQ > Mesoscopic Physics

Mesoscopic Physics

Electron transport in mesoscopic physics is strongly dominated by the wave nature of the electron in quantum mechanics. If one neglects the Coulomb interactions, e.g. the many particle aspects, which is often realized in mesoscopic samples, the electron transport can related to classical wave equations. Thus setting up corresponding environments one can mimic electronic properties, like band structures, density of states, wave functions and currents by classical waves. MOSAIQ addresses the domain using microwaves, light and elastodynamics waves in experiments and numerical simulations.

Using classical waves it is possible to control the system in a much cleaner and preciser way than it is possible than in mesoscopic physics. One can easily vary parameters, change the regime from ballistic via diffusive to localized transport. Additionally one can introduce non-linearities for light waves by the Kerr effect.

In the projects shown below we investigate, e.g. the stability of speckle patterns on the strength of the non-linearity in fibers, the occurrence of extreme waves in correlated disordered systems, the interplay of chaotic and regular dynamics. Apart from this investigation of complex scattering systems MOSAIQ developed a new experimental setup using dielectric resonators to realize two-dimensional tight binding systems. Using this setup MOSAIQ is able to realize artificial graphene with its relations to the Dirac equation.


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