Spectral homodyne detection, resonator detection, and entanglement in the above-threshold OPO
F. A. S. Barbosa, A. S. Coelho, K. N. Cassemiro, Claude Fabre, P. Nussenzveig, Alessandro S. Villar, M. Martinelli · Research in Optical Sciences · 2014
In the spectral domain, the quantum state of the three beams emitted by an above-threshold optical parametric oscillator encompasses six modes. We use resonator detection to characterize hexapartite entanglement.