We are very very excited about the new results on GaAs/AlGaAs semiconductor entangled photon sources. Nearly 100% of QDs in an as-grown wafer can emit polarization entangled photons, without any post-growth tuning. As also shown in another work by our collaborator in Linz, these sources have potentially very high indistinguishability. Dresden: arxiv.org/abs/1611.03717 Linz: arxiv.org/abs/1610.06889