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arXiv quant-ph/0607190quant-ph
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Bell型不等式的相关准则与纠缠检测

Correlation criteria for Bell type inequalities and entanglement detection

Che-Ming Li, Li-Yi Hsu, Wei-Yang Lin, Yueh-Nan Chen, Der-San Chuu, Tobias Brandes

摘要:

我们提供了一个新的标准来识别量子关联,这使我们能够找到贝尔型不等式,纠缠检测和关联之间的联系。我们利用该准则构造见证算子,可以用较少的局域测量来检测真正的多量子比特纠缠。讨论了量子关联的识别与Mermin不等式之间的联系。以同样的方式显示了用两个本地测量设置检测真正的四能级三方纠缠。进一步,通过量子关联准则,我们得到了任意高维二分系统的一个新的贝尔不等式,该不等式需要对测量结果进行较少的分析。

英文摘要:

We provide a novel criterion for identifying quantum correlation, which allows us to find connections between Bell type inequalities, entanglement detection, and correlation. We utilize the criterion to construct witness operators that can detect genuine multi-qubit entanglement with fewer local measurements. The connection between identifications of quantum correlation and Mermin's inequality is discussed. Detection of genuine four-level tripartite entanglement with two local measurement settings is shown in the same manner. Further, through the criterion of quantum correlation, we derive a new Bell inequality for arbitrary high-dimensional bipartite systems, which requires fewer analyses of the measured outcomes.

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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