Entanglement and conservation of orbital angular momentum in spontaneous parametric down-conversion
Quantum Physics
2009-11-11 v1
Abstract
We show that the transfer of the plane wave spectrum of the pump beam to the fourth-order transverse spatial correlation function of the two-photon field generated by spontaneous parametric down-conversion leads to the conservation and entanglement of orbital angular momentum of light. By means of a simple experimental setup based on fourth-order (or two-photon) interferometry, we show that our theoretical model provides a good description for down-converted fields carrying orbital angular momentum.
Cite
@article{arxiv.quant-ph/0503029,
title = {Entanglement and conservation of orbital angular momentum in spontaneous parametric down-conversion},
author = {S. P. Walborn and A. N. de Oliveira and R. S. Thebaldi and C. H. Monken},
journal= {arXiv preprint arXiv:quant-ph/0503029},
year = {2009}
}
Comments
6 pages, 5 figures