Media 1: Non-collinear and non-degenerate polarization-entangled photon generation via concurrent type-I parametric downconversion in PPLN de ChatellusHugues Guillet SergienkoAlexander V. SalehBahaa E. A. TeichMalvin C. GiuseppeGiovanni Di 2006 Originally published in Optics Express on 16 October 2006 (oe-14-21-10060)