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On Classical Teleportation and Classical Nonlocality

机译:论古典传送与古典非局域性

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摘要

An interesting protocol for classical teleportation of an unknown classicalstate was recently suggested by Cohen, and by Gour and Meyer. In that protocol,Bob can sample from a probability distribution P that is given to Alice, evenif Alice has absolutely no knowledge about P. Pursuing a similar line ofthought, we suggest here a limited form of nonlocality - "classicalnonlocality". Our nonlocality is the (somewhat limited) classical analogue ofthe Hughston-Jozsa-Wootters (HJW) quantum nonlocality. The HJW nonlocalitytells us how, for a given density matrix rho, Alice can generate anyrho-ensemble on the North Star. This is done using surprisingly few resources -one shared entangled state (prepared in advance), one generalized quantummeasurement, and no communication. Similarly, our classical nonlocalitypresents how, for a given probability distribution P, Alice can generate anyP-ensemble on the North Star, using only one correlated state (prepared inadvance), one (generalized) classical measurement, and no communication. It is important to clarify that while the classical teleportation and theclassical non-locality protocols are probably rather insignificant from aclassical information processing point of view, they significantly contributeto our understanding of what exactly is quantum in their well established andhighly famous quantum analogues.
机译:科恩(Cohen)以及古尔(Gour)和迈耶(Meyer)最近提出了一种有趣的协议,用于未知的古典状态的古典隐形传态。在该协议中,即使Alice完全不了解P,Bob仍可以从提供给Alice的概率分布P中进行采样。按照类似的思路,我们在这里建议使用一种有限形式的非局部性-“ classicalnonlocality”。我们的非局部性是Hughston-Jozsa-Wootters(HJW)量子非局部性的(略有限制)经典类似物。 HJW的非局部性告诉我们,对于给定的密度矩阵rho,爱丽丝如何在北极星上生成任意交集。这是使用令人惊讶的少量资源完成的-一种共享的纠缠态(预先准备),一种广义的量子测量和没有通信。类似地,我们的经典非局部性表示在给定的概率分布P下,爱丽丝如何仅使用一种相关状态(预先准备的提前状态),一种(广义的)经典度量并且不进行任何通信就可以在北极星上生成任何P集合。需要澄清的是,尽管从经典信息处理的角度来看,经典的隐形传态和经典的非局域性协议可能显得微不足道,但它们极大地有助于我们理解其完善的,著名的量子类似物究竟是什么。

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    Mor, Tal;

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  • 年度 2007
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  • 正文语种 {"code":"en","name":"English","id":9}
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