arXivDaily arXiv每日学术速递 周一至周五更新
arXiv quant-ph/0603085quant-ph
收藏

两体纯量子态的广义纠缠辅助变换

General entanglement-assisted transformation for bipartite pure quantum states

Wei Song, Yan Huang, Nai-Le Liu, Zeng-Bing Chen

摘要:

我们介绍了在局域操作和经典通信下纯纠缠变换的一般催化剂,我们忽略了催化剂本身的纠缠的利润和损失。因此,纯纠缠变换的可能性大大扩展。值得注意的是,我们发现了一个有趣的现象,在某些情况下,不可比对${| ψ> ,| ϕ> \} $和${| χ> ,| χ^{\prime}> \} $可以互相帮助,从而实现转换$| ψ> | χ> \to| ϕ> | χ^{\prime}>$。我们还设计了一个有效的算法来检测是否存在一个$k\times k$一般的催化剂为一个给定的纠缠变换。该算法也可以用来证明标准催化剂的存在。

英文摘要:

We introduce the general catalysts for pure entanglement transformations under local operations and classical communications in such a way that we disregard the profit and loss of entanglement of the catalysts per se. As such, the possibilities of pure entanglement transformations are greatly expanded. Remarkably, we find an interesting phenomenon that, in some situations, incomparable pairs ${| ψ> ,| ϕ> \} $ and ${| χ> ,| χ^{\prime}> \} $ can assist each other mutually so as to realize the transformation $| ψ> | χ> \to| ϕ> | χ^{\prime}>$. We also design an efficient algorithm to detect whether a $k\times k$ general catalyst exists for a given entanglement transformation. This algorithm can as well be exploited to witness the existence of standard catalysts.

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。

↑