Entanglement classes of symmetric Werner states

Details Entanglement classes of symmetric Werner states Entanglement classes of symmetric Werner states

2011-06-21

arxiv.org/abs/1106.4220v4

Phys. Rev. A, 84:042316, 2011

Physics

Quantum Physics

4 pages, 1 table, additional references in version 2, revised abstract and introduction in version 3, small clarifications for

Scientific paper

The symmetric Werner states for $n$ qubits, important in the study of quantum nonlocality and useful for applications in quantum information, have a surprisingly simple and elegant structure in terms of tensor products of Pauli matrices. Further, each of these states forms a unique local unitary equivalence class, that is, no two of these states are interconvertible by local unitary operations.

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