中文

可分性判据与具有正部分转置的不可分混合态

量子物理 2009-10-30 v2

摘要

我们证明希尔伯特空间 H=H1H2{\cal H}={\cal H}_1\otimes{\cal H}_2 上的任意可分态均可写为 N(dimH)2N\leq (dim{\cal H})^2 个纯乘积态的凸组合。进而得到以密度矩阵值域表示的混合态新可分性判据。该判据被用于构造 3×33\times 32×42\times 4 系统中具有正部分转置的不可分混合态。这些态所代表的纠缠比迄今已知的更为隐晦。

关键词

引用

@article{arxiv.quant-ph/9703004,
  title  = {Separability criterion and inseparable mixed states with positive partial transposition},
  author = {Pawel Horodecki},
  journal= {arXiv preprint arXiv:quant-ph/9703004},
  year   = {2009}
}

备注

It is improved and extended version of the former manuscript, in particular the theorem concerning finite decomposition of separable states has been included, 14 pages, RevTeX