Classification of multi-qubit mixed states: separability and distillability properties

Details Classification of multi-qubit mixed states: separability and distillability properties Classification of multi-qubit mixed states: separability and distillability properties

1999-11-10

arxiv.org/abs/quant-ph/9911044v1

Phys. Rev. A 61, 042314 (2000)

Physics

Quantum Physics

12 pages, 2 figures

Scientific paper

10.1103/PhysRevA.61.042314

We give a complete, hierarchic classification for arbitrary multi-qubit mixed states based on the separability properties of certain partitions. We introduce a family of N-qubit states to which any arbitrary state can be depolarized. This family can be viewed as the generalization of Werner states to multi-qubit systems. We fully classify those states with respect to their separability and distillability properties. This provides sufficient conditions for nonseparability and distillability for arbitrary states.

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