Determining whether a quantum state is separable or entangled is a problem of fundamental importance in quantum information science. This is a brief review in which we consider the problem for states in infinite dimensional Hilbert spaces. We show how the problem becomes tractable for a class of Gaussian states.
Cite
@article{arxiv.cs/0603047,
title = {The Quantum Separability Problem for Gaussian States},
author = {Stefano Mancini and Simone Severini},
journal= {arXiv preprint arXiv:cs/0603047},
year = {2007}
}