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arXiv quant-ph/0205089quant-ph
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利用少量局域测量检测纠缠

Detection of entanglement with few local measurements

O. Guehne, P. Hyllus, D. Bruss, A. Ekert, M. Lewenstein, C. Macchiavello, A. Sanpera

摘要:

我们介绍了一个一般的方法,实验检测纠缠只进行几个本地测量,假设一些先验知识的密度矩阵。这个想法是基于证人运营商的最小分解成一个伪混合的本地运营商。我们讨论了一个实验相关的情况下,两个量子比特,并显示一个例子如何绑定纠缠可以检测到很少的本地测量。

英文摘要:

We introduce a general method for the experimental detection of entanglement by performing only few local measurements, assuming some prior knowledge of the density matrix. The idea is based on the minimal decomposition of witness operators into a pseudo-mixture of local operators. We discuss an experimentally relevant case of two qubits, and show an example how bound entanglement can be detected with few local measurements.

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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