Entanglement indicators for quantum optical fields: three-mode multiport beamsplitters EPR interference experiments

Junghee Ryu, Marcin Marciniak, Marcin Wieśniak +1

We generalize a new approach to entanglement conditions for light of undefined photons numbers given in [Phys. Rev. A {\bf 95}, 042113 (2017)] for polarization correlations to a br…