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arXiv quant-ph/9906080quant-ph
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用隐形传态构建多粒子态

Building multiparticle states with teleportation

Ernesto Galvao, Lucien Hardy

摘要:

我们描述了一个利用Einstein-Podolsky-Rosen(EPR)对产生任意N分纯量子态的方案。该协议只采用本地操作和N方之间的经典通信(N-LOCC)。特别是,我们依靠量子数据压缩和隐形传态来创建所需的状态。该协议可以用来获得任意N体纯态形成的两体纠缠的上界,在多个副本的渐近极限下。我们将其应用到几个多方国家的利益,表明在某些情况下,它不是最佳的。协议的推广是最佳的一些例子,我们认为,但可能仍然是效率低下的任意状态。

英文摘要:

We describe a protocol which can be used to generate any N-partite pure quantum state using Einstein-Podolsky-Rosen (EPR) pairs. This protocol employs only local operations and classical communication between the N parties (N-LOCC). In particular, we rely on quantum data compression and teleportation to create the desired state. This protocol can be used to obtain upper bounds for the bipartite entanglement of formation of an arbitrary N-partite pure state, in the asymptotic limit of many copies. We apply it to a few multipartite states of interest, showing that in some cases it is not optimal. Generalizations of the protocol are developed which are optimal for some of the examples we consider, but which may still be inefficient for arbitrary states.

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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