Hierarchies of multipartite entanglement for continuous-variable states
Antonio A. Valido, Federico Levi, Florian Mintert · Physical Review A · 2014
We derive a hierarchy of separability criteria for multimode continuous-variable systems. They permit one to study in a unified way the $k$-partite entanglement of broad classes of Gaussian and non-Gaussian states. With specific examples we demonstrate the strength of the criteria, and we discuss their assessment based on data obtained from Gaussian measurements.