Entangling a polariton with one photon: effect of interactions at the single-particle level. Ă. Cuevas, B. Silva, J. C. LĂłpez Carreño, M. de Giorgi, C. SĂĄnchez Muñoz, A. Fieramosca, D. G. SuĂĄrez Forero, F. Cardano, L. Marrucci, V. Tasco, G. Biasiol, E. del Valle, L. Dominici, D. Ballarini, G. Gigli, P. Mataloni, F. P. Laussy, F. Sciarrino and D. Sanvitto in arXiv:1609.01244 (2016).