Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands.
Phys Rev Lett. 2010 Apr 30;104(17):173601. doi: 10.1103/PhysRevLett.104.173601. Epub 2010 Apr 27.
We report the observation of speckle patterns in quantum correlations within light that is scattered by a disordered medium. The random medium is illuminated with spatially entangled photon pairs, and fourth-order speckle patterns are spatially resolved by two independently scanning detectors. Spatial entanglement gives two-photon speckle a much richer structure than ordinary one-photon speckle. Our experiments demonstrate that two-photon speckle from a surface scatterer and a volume scatterer look entirely different.
我们报告了在被无序介质散射的光中量子相关性的散斑模式的观察结果。随机介质用空间纠缠的光子对照明，两个独立扫描探测器空间分辨第四阶散斑模式。空间纠缠使双光子散斑具有比普通单光子散斑更丰富的结构。我们的实验证明，来自表面散射体和体积散射体的双光子散斑看起来完全不同。
