中文

Bound entanglement for continuous variables is a rare phenomenon

量子物理 2007-05-23 v3

摘要

We discuss the notion of bound entanglement (BE) for continuous variables (CV). We show that the set of non--distillable states (NDS) for CV is nowhere dense in the set of all states, i.e., the states of infinite--dimensional bipartite systems are generically distillable. This automatically implies that the sets of separable states, entangled states with positive partial transpose, and bound entangled states are also nowhere dense in the set of all states. All these properties significantly distinguish quantum CV systems from the spin like ones. The aspects of the definition of BE for CV is also analysed, especially in context of Schmidt numbers theory. In particular the main result is generalised by means of arbitrary Schmidt number and single copy regime.

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引用

@article{arxiv.quant-ph/0103076,
  title  = {Bound entanglement for continuous variables is a rare phenomenon},
  author = {Pawel Horodecki and J. Ignacio Cirac and Maciej Lewenstein},
  journal= {arXiv preprint arXiv:quant-ph/0103076},
  year   = {2007}
}

备注

Essentially changed and improved, list of Authors extended, 9 pages, Revtex