An experimental investigation of criteria for continuous variable entanglement
W.P. Bowen, R. S. SCHNABEL, N. Treps, Hans‐A. Bachor, PK Lam, T.C. Ralph · 2003
Summary form only given. We characterize entangled optical beams using an EPR criterion and an inseparability criterion, and demonstrate qualitative and quantitative differences. We clarify this discrepancy by considering entanglement in terms of necessary and excess sideband photon numbers.