We demonstrate that intensity correlations of second order in the fluorescence light of N > 2 single- photon emitters may violate locality while the visibility of the signal remains below 71%. For this, we derive a homogeneous Bell-Wigner-type inequality, which can be applied to a broad class of experimental setups. We trace the violation of this inequality back to path entanglement created by the process of detection.
@article{arxiv.1005.4182,
title = {Non-locality from N > 2 Independent Single Photon Emitters},
author = {C. Thiel and R. Wiegner and J. von Zanthier and G. S. Agarwal},
journal= {arXiv preprint arXiv:1005.4182},
year = {2010}
}