We characterize the positive maps detecting the entangled bipartite states of n × 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.

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

BENATTI, FABIO;
2013-01-01

Abstract

We characterize the positive maps detecting the entangled bipartite states of n × 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.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2717479
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