We study a class of mixed non-Gaussian entangled states that, whilst closely related to Gaussian entangled states, none-the-less exhibit distinct properties previously only associated with more exotic, pure non-Gaussian states.
Cite
@article{arxiv.quant-ph/0605247,
title = {Non-Gaussian, Mixed Continuous-Variable Entangled States},
author = {A. P. Lund and T. C. Ralph and P. van Loock},
journal= {arXiv preprint arXiv:quant-ph/0605247},
year = {2007}
}