Dresden 2011 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 23: Poster 2: Intersectional Session

Q 23.3: Poster

Dienstag, 15. März 2011, 18:00–21:00, P1

Entanglement and Thouless time from coincidence measurements across disordered media — •Nicolas Cherroret and Andreas Buchleitner — Institute of Physics, Albert-Ludwigs University of Freiburg, Hermann-Herder-Str. 3, D-79104 Freiburg, Germany

When light propagates in a disordered medium, it generally experiences a diffusion process. In some cases however, when the disorder strength is increased, interference between multiple scattering paths may build up, which lead to non-vanishing intensity correlations between different points of the scattering sample. If this picture is today well understood in situations where the light is in a classical state, less is known about multiple scattering of non-classical light. We will investigate the propagation of a photon-pair, a strongly nonclassical state of light, in a disordered medium. We will show that interference contributions to the coincidence counting rate of the two transmitted photons contain information about the spectral entanglement of the pair, and about the dynamical properties of the medium. A possible experimental technique for accessing this information will be proposed.