A new article of the team submitted to ArXiv: Á. Cuevas, B. Silva, J. C. López Carreño, M. de Giorgi, C. Sánchez Muñoz, A. Fieramosca, D. G. Suárez 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, D. Sanvitto. Entangling a polariton with one photon: effect of interactions at the single-particle level [arXiv:1609.01244]