Entanglement, mixedness, and spin-flip symmetry in multiple-qubit systems
Sergienko, Alexander V.
Saleh, Bahaa E. A.
Teich, Malvin C.
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CitationG Jaeger, AV Sergienko, BEA Saleh, MC Teich. 2003. "Entanglement, mixedness, and spin-flip symmetry in multiple-qubit systems." PHYSICAL REVIEW A, Volume 68, Issue 2, pp. ? - ? (5).
A relationship between a recently introduced multipartite entanglement measure, state mixedness, and spin-flip symmetry is established for any finite number of qubits. It is also shown that, for those classes of states invariant under the spin-flip transformation, there is a complementarity relation between multipartite entanglement and mixedness. A number of example classes of multiple-qubit systems are studied in light of this relationship.