A necessary and sufficient criterion for multipartite separable states

Abstract

We present a necessary and sufficient condition for the separability of multipartite quantum states, this criterion also tells us how to write a multipartite separable state as a convex sum of separable pure states. To work out this criterion, we need to solve a set of equations, actually it is easy to solve these quations analytically if the density matrix of the given quantum state has few nonzero eigenvalues.

4 pages, Revtex

References in corpus (1)

• Experimental quantum teleportation

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