Spatial quantum correlations in multiple scattered light

Phys Rev Lett. 2005 Oct 21;95(17):173901. doi: 10.1103/PhysRevLett.95.173901. Epub 2005 Oct 19.


We predict a new spatial quantum correlation in light propagating through a multiple scattering random medium. The correlation depends on the quantum state of the light illuminating the medium, is infinite in range, and dominates over classical mesoscopic intensity correlations. The spatial quantum correlation is revealed in the quantum fluctuations of the total transmission or reflection through the sample and should be readily observable experimentally.