Department of Photonics Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark.
Phys Rev Lett. 2010 Aug 27;105(9):090501. doi: 10.1103/PhysRevLett.105.090501. Epub 2010 Aug 25.
We report on the effects of quantum interference induced by the transmission of an arbitrary number of optical quantum states through a multiple-scattering medium. We identify the role of quantum interference on the photon correlations and the degree of continuous variable entanglement between two output modes. It is shown that quantum interference survives averaging over all ensembles of disorder and manifests itself as increased photon correlations due to photon antibunching. Furthermore, the existence of continuous variable entanglement correlations in a volume speckle pattern is predicted. Our results suggest that multiple scattering provides a promising way of coherently interfering many independent quantum states of light of potential use in quantum information processing.
我们报告了通过多散射介质传输任意数量的光学量子态引起的量子干涉的影响。我们确定了量子干涉对两个输出模式之间的光子相关性和连续变量纠缠程度的作用。结果表明，量子干涉在对所有无序集合进行平均后仍然存在，并表现为由于光子反聚束而导致的光子相关性增加。此外，还预测了在体积斑点图案中存在连续变量纠缠相关性。我们的结果表明，多散射为相干地干涉许多潜在用于量子信息处理的独立光量子态提供了一种有前途的方法。
