par Daems, David ;Cerf, Nicolas
Référence Physical review. A, Atomic, Molecular, and Optical Physics, 82, page (032303)
Publication Publié, 2010
Article révisé par les pairs
Résumé : We present a simple model together with its physical implementation which allows one to generate multipartite entanglement between several spatial modes of the electromagnetic field. It is based on parametric down-conversion with N pairs of symmetrically tilted plane waves serving as a pump. The characteristics of this spatial entanglement are investigated in the cases of zero as well as nonzero phase mismatch. Furthermore, the phenomenon of entanglement localization in just two spatial modes is studied in detail and shown to result in an enhancement of the entanglement by a factor √N. © 2010 The American Physical Society.