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.File in questo prodotto:
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