Detection of a diffusive cloak via second-order statistics

Abstract

We propose a scheme to detect the diffusive cloak proposed by Schittny et al [Science 345, 427 (2014)]. We exploit the fact that diffusion of light is an approximation that disregards wave interference. The long-range contribution to intensity correlation is sensitive to locations of paths crossings and the interference inside the medium, allowing one to detect the size and position, including the depth, of the diffusive cloak. Our results also suggest that it is possible to separately manipulate the first-and the second-order statistics of wave propagation in turbid media.

Enhancing light transmission through a disordered waveguide with inhomogeneous scattering and loss

“…This work demonstrated the power of wavefront shaping in controlling light transport in inhomogeneous scattering samples, which are common in real applications. In addition, our results may trigger further studies of onchip disordered photonic nanostructures with spatially varying scattering strength and loss to mold the flow of light 17 .…”