Continuous-Variable Measurements of Non-Classical Light
F. A. S. Barbosa, A. S. Coelho, K. N. Cassemiro, Alessandro S. Villar, Claude Fabre, M. Martinelli, P. Nussenzveig · 2012
In recent years we have investigated pump-signal-idler entanglement in the above-threshold optical parametric oscillator. Spectral homodyne-type detection probes two sidebands at a given analysis frequency per beam. Hexapartite entanglement is observed.