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Entanglement witnesses for a class of bipartite states of n x n qubits

We characterize the positive maps detecting the entangled bipartite states of n x n qubits that are diagonal with respect to the orthonormal basis constructed by tensor products of Pauli matrices acting on the totally symmetric state. We then discuss the case n=2 for a class of states completely determined by the geometric patterns of subsets of a 16 point lattice.

preprint2013arXivOpen access
Fabio BenattiMahya Karbalaii
math-phmath.MPquant-ph
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Fabio BenattiMahya Karbalaii

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