Entanglement, Mixedness, and Spin-Flip Symmetry in Multiple-Qubit Systems

Details Entanglement, Mixedness, and Spin-Flip Symmetry in Multiple-Qubit Systems Entanglement, Mixedness, and Spin-Flip Symmetry in Multiple-Qubit Systems

2003-07-17

arxiv.org/abs/quant-ph/0307124v1

Physical Review A 68, 022318 (2003) .

Physics

Quantum Physics

To appear in Physical Review A; submitted 14 May 2003

Scientific paper

10.1103/PhysRevA.68.022318

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, within 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.

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