Separability criteria for several classes of n-partite quantum states
College of Mathematics and Information Science, Hebei
Normal University, Shijiazhuang, 050016, P.R. China
Corresponding author: a email@example.com
Revised: 13 November 2010
Published online: 4 February 2011
In this paper, we mainly discuss the separability of n-partite quantum states using elements of density matrices. Practical separability criteria for different classes of n-qubit and n-qudit quantum states are obtained. Some of them are also sufficient conditions for genuine entanglement of n-partite quantum states. Moreover, one of the resulting criteria is also necessary and sufficient for a class of n-partite states.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2011