Silberhorn, C., Lam, P., Weiss, O., Konig, F., Korolkova, N., & Leuchs, G. (2001).
Generation of continuous variable Einstein-Podolsky-Rosen entanglement via the Kerr nonlinearity in an optical fiber. PHYSICAL REVIEW LETTERS, 86(19), 4267-4270. doi:10.1103/PhysRevLett.86.4267.