title: Weak localization of light in superdiffusive random systems.
abstract: Lévy flights constitute a broad class of random walks that occur in many fields of research, from biology to economy and geophysics. The recent advent of Lévy glasses allows us to study Lévy flights-and the resultant superdiffusion-using light waves. This raises several questions about the influence of interference on superdiffusive transport. Superdiffusive structures have the extraordinary property that all points are connected via direct jumps, which is expected to have a strong impact on interference effects such as weak and strong localization. Here we report on the experimental observation of weak localization in Lévy glasses and compare our results with a recently developed theory for multiple scattering in superdiffusive media. Experimental results are in good agreement with theory and allow us to unveil the light propagation inside a finite-size superdiffusive system.
authors.affiliation: European Laboratory for Non-linear Spectroscopy (LENS), Sesto Fiorentino (FI), Italy. burresi@lens.unifi.it
authors.forename: Matteo
authors.initials: M
authors.lastname: Burresi
authors.forename: Vivekananthan
authors.initials: V
authors.lastname: Radhalakshmi
authors.forename: Romolo
authors.initials: R
authors.lastname: Savo
authors.forename: Jacopo
authors.initials: J
authors.lastname: Bertolotti
authors.forename: Kevin
authors.initials: K
authors.lastname: Vynck
authors.forename: Diederik S
authors.initials: DS
authors.lastname: Wiersma