We demonstrate quantum interference between photons generated by the radiative decay processes of excitons that are bound to isolated fluorine donor impurities in ZnSe/ZnMgSe quantum-well nanostructures. The ability to generate single photons from these devices is confirmed by auto-correlation experiments, and indistinguishability of single photons from two independent devices is confirmed via a Hong-Ou-Mandel dip. These results indicate that donor impurities in appropriately engineered semiconductor structures can portray atom-like homogeneity and coherence properties, potentially enabling scalable technologies for future large-scale optical quantum computers and quantum communication networks.
@article{arxiv.0903.1849,
title = {Indistinguishable photons from independent semiconductor single-photon devices},
author = {Kaoru Sanaka and Alexander Pawlis and Thaddeus Ladd and Klaus Lischka and Yoshihisa Yamamoto},
journal= {arXiv preprint arXiv:0903.1849},
year = {2009}
}