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arXiv quant-ph/9807069quant-ph
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束缚纠缠与隐形传态

Bound Entanglement and Teleportation

N Linden, S Popescu

摘要:

最近M。Horodecki,P. Horodecki和R. Horodecki引入了一组两个自旋为1的粒子的密度矩阵,即使密度矩阵是纠缠的,也不可能从中提取出任何最大纠缠态。因此,这些密度矩阵不允许可靠的隐形传态。然而,这些状态可以用于隐形传态,虽然不可靠,但仍然具有比经典方案更高的保真度。我们表明,至少对于这些密度矩阵,隐形传态不能实现比经典保真度更好。

英文摘要:

Recently M. Horodecki, P. Horodecki and R. Horodecki have introduced a set of density matrices of two spin-1 particles from which it is not possible to distill any maximally entangled states, even though the density matrices are entangled. Thus these density matrices do not allow reliable teleportation. However it might nevertheless be the case that these states can be used for teleportation, not reliably, but still with fidelity greater than that which may be achieved with a classical scheme. We show that, at least for some of these density matrices, teleportation cannot be achieved with better than classical fidelity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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