Persistency of genuine correlations under particle loss

Abstract

In a recent work Brunner and Vertesi [Phys. Rev. A 86, 042113 (2012)] the question of persistency of entanglement and nonlocality of multiparty systems under particle loss has been addressed. This question is of immense importance considering the practical realization of the information theoretic tasks which make use of the power of quantum correlations. But in the multipartite scenario more interesting cases arise since subsystems can also possess genuineness in correlation which is prevalently inequivalent to the bipartite scenario. In this paper we investigate the persistency of such genuine correlations under particle loss. Keeping in mind the practical importance, considerable attention has been devoted to find the multiparty states which exhibit maximal persistency of genuine correlations.