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arXiv 0911.3606quant-ph
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局域量子可观测量关联的统一框架

Unified Framework for Correlations in Terms of Local Quantum Observables

A. Acín, R. Augusiak, D. Cavalcanti, C. Hadley, J. K. Korbicz, M. Lewenstein, Ll. Masanes, M. Piani

摘要:

我们提供了一个统一的框架nonsignaling量子和经典的多体相关性,允许所有被写入一些本地(量子)测量乘以运营商的痕迹。该算子的性质定义了相应的关联集,然后证明了如果该理论使得所有的局域量子测量都是可能的,则得到了与格里森定理到多体系统的推广相对应的关联。这样的相关性与一方和两方的量子相关性相吻合,但我们证明了三方或三方以上的间隙的存在。

英文摘要:

We provide a unified framework for nonsignalling quantum and classical multipartite correlations, allowing all to be written as the trace of some local (quantum) measurements multiplied by an operator. The properties of this operator define the corresponding set of correlations.We then show that if the theory is such that all local quantum measurements are possible, one obtains the correlations corresponding to the extension of Gleason's Theorem to multipartite systems. Such correlations coincide with the quantum ones for one and two parties, but we prove the existence of a gap for three or more parties.

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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