%0 Journal Article %T Separability and distillability of multiparticle quantum systems %A W. D¨¹r %A J. I. Cirac %A R. Tarrach %J Physics %D 1999 %I arXiv %R 10.1103/PhysRevLett.83.3562 %X We present a family of 3--qubit states to which any arbitrary state can be depolarized. We fully classify those states with respect to their separability and distillability properties. This provides a sufficient condition for nonseparability and distillability for arbitrary states. We generalize our results to $N$--particle states. %U http://arxiv.org/abs/quant-ph/9903018v2