A class of 2^N x 2^N bound entangled states revealed by non-decomposable maps

Abstract

We use some general results regarding positive maps to exhibit examples of non-decomposable maps and 2^N x 2^N, N >= 2, bound entangled states, e.g. non distillable bipartite states of N + N qubits.

19 pages, 1 figure

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