Tripartite entanglement in parametric down-conversion with spatially-structured pump

Details Tripartite entanglement in parametric down-conversion with spatially-structured pump Tripartite entanglement in parametric down-conversion with spatially-structured pump

2010-02-09

arxiv.org/abs/1002.1798v1

J. Opt. Soc. Am. B 27, 447 (2010)

Physics

Quantum Physics

6 pages, 2 figures

Scientific paper

10.1364/JOSAB.27.000447

Most investigations of multipartite entanglement have been concerned with temporal modes of the electromagnetic field, and have neglected its spatial structure. We present a simple model which allows to generate tripartite entanglement between spatial modes by parametric down-conversion with two symmetrically-tilted plane waves serving as a pump. The characteristics of this entanglement are investigated. We also discuss the generalization of our scheme to 2N+1-partite entanglement using 2N symmetrically-tilted plane pump waves. Another interesting feature is the possibility of entanglement localization in just two spatial modes.

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