A general and computable criterion for k-(in)separability in continuous multipartite quantum systems is presented. The criterion can be experimentally implemented with a finite and comparatively low number of local observables. We discuss in detail how the detection quality can be optimised.
@article{arxiv.1101.0972,
title = {A Computable Criterion for Partial Entanglement in Continuous Variable Quantum Systems},
author = {Andreas Gabriel and Marcus Huber and Sasa Radic and Beatrix C. Hiesmayr},
journal= {arXiv preprint arXiv:1101.0972},
year = {2012}
}