by
Sergey Skipetrov(LPMMC, CNRS, Grenoble, France)
→
Europe/Rome
Aula Conversi (Dip. di Fisica - Edificio G. Marconi)
Aula Conversi
Dip. di Fisica - Edificio G. Marconi
Description
Anderson localization is a halt of transport in quantum or wave systems due to strong disorder. It is associated with the localized character of eigenstates or eigenmodes. We have recently discovered that the simplest model of a three-dimensional (3D) optical disordered system an ensemble of point-like scatterers (atoms) at random positions does not allow to reach Anderson localization of light. This is due to a subtle interplay of multiple scattering and resonant dipole-dipole interactions between atoms at a high density of scatterers. A strong magnetic field can be used to partially suppress the ! dipole-dipole interactions and induce the localization transition for light at certain frequencies. It remains to be seen how our theoretical results can be reconciled with the recent experimental observations of Anderson localization in 3D dielectric systems.
