4.8 Article

Einstein-Podolsky-Rosen Spatial Entanglement in Ordered and Anderson Photonic Lattices

Journal

PHYSICAL REVIEW LETTERS
Volume 110, Issue 15, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.150503

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We demonstrate quantum walks of a photon pair in a spatially extended Einstein-Podolsky-Rosen state coupled into an on-chip multiport photonic lattice. By varying the degree of entanglement we observe Anderson localization for pairs in a separable state and Anderson colocalization for pairs in an Einstein-Podolsky-Rosen entangled state. In the former case, each photon localizes independently, while in the latter neither photon localizes, but the pair colocalizes-revealing unexpected survival of the spatial correlations through strong disorder. DOI: 10.1103/PhysRevLett.110.150503

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