arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1601.02501quant-ph
收藏

概率量子隐形传态

Probabilistic Quantum Teleportation

Jianhao M. Yang

备注：
8 pages, minor changes on section I
阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

摘要：

部分纠缠量子信道的隐形传态不能达到单位保真度和单位几率。我们证明了一个纯态或一个混合态的忠实隐形传态的条件可以用同样的一般关系式$ρ_{q}ρ_{m} = pI$来描述，其中$ρ_{q}$是量子信道的约化密度矩阵，$ρ_{m}$是测量基的约化密度矩阵，$p$是忠实隐形传态的概率.研究了在幺正变换下忠实隐形传态条件的不变性。这些结果不仅为概率量子隐形传态理论提供了新的见解，而且为寻找任意部分纠缠量子信道的忠实隐形传态概率和匹配测量基提供了一种简单的方法，具有实际意义.

英文摘要：

Teleporation with partially entangled quantum channel cannot achieve unit fidelity and unit probability. We show that the conditions for faithful teleportation of a pure state or a mixed state can be described by the same general relation $ρ_{q}ρ_{m} = pI$, where $ρ_{q}$ is the reduced density matrix of the quantum channel, $ρ_{m}$ is the reduced density matrix of the measurement basis, and $p$ is the probability of faithful teleportaion. We investigate the invariance of faithful teleportation conditions under unitary transformation. These results not only bring new insights to the probabilistic quantum teleportation theory, but also offer operational significance in that a simple procedure is provided to find out the faithful teleportaiton probability and the matching measurement basis for any partially entangled quantum channel.

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。

↑