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arXiv 1411.0397quant-ph
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通道转向

Channel Steering

Marco Piani

摘要:

我们介绍和研究的概念,可操纵的渠道。这推广了二分量子态可操纵性的概念。我们讨论了一个关键的概念之间的差异的情况下的状态和情况下的渠道:而状态引导处理的概念“隐藏”的状态,可操纵性在渠道的情况下,更好地理解的一致性的渠道扩展,而不是在“隐藏”的渠道。这种区别在国家的情况下消失了。我们进一步讨论了如何提出的概念缺乏连贯性的渠道扩展一致的概念,通过本地操作和经典的通信实现的渠道扩展。我们还讨论了如何Choi-Jamiolkowski同构允许直接应用的许多结果状态的情况下,渠道。我们介绍了渠道扩展的可操纵性的措施。

英文摘要:

We introduce and study the notion of steerability for channels. This generalizes the notion of steerability of bipartite quantum states. We discuss a key conceptual difference between the case of states and the case of channels: while state steering deals with the notion of "hidden" states, steerability in the channel case is better understood in terms of coherence of channel extensions, rather than in terms of "hidden" channels. This distinction vanishes in the case of states. We further argue how the proposed notion of lack of coherence of channel extensions coincides with the notion of channel extensions realized via local operations and classical communication. We also discuss how the Choi-Jamiolkowski isomorphism allows the direct application of many results about states to the case of channels. We introduce measures for the steerability of channel extensions.

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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