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arXiv quant-ph/0410139quant-ph
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抗不完美性的多体非定域量子关联

Multipartite Nonlocal Quantum Correlations Resistant to Imperfections

H. Buhrman, P. Hoyer, S. Massar, H. Roehrig

摘要:

我们使用的通信下界的技术,以获得必要的条件,在探测器的效率或超光速通信量能够再现与经典的本地隐变量理论的量子相关性发生在EPR型实验中的噪声的存在。我们将我们的方法应用到一个涉及n个共享GHZ型状态的参与方的例子中,并在此基础上进行测量,结果表明,对于局部隐变量理论,即使对于恒定的一般错误概率η = O(1),超光速经典通信量c和探测器效率eta也受到eta 2^(-c/n)= O(n^(-1/6))的约束。

英文摘要:

We use techniques for lower bounds on communication to derive necessary conditions in terms of detector efficiency or amount of super-luminal communication for being able to reproduce with classical local hidden-variable theories the quantum correlations occurring in EPR-type experiments in the presence of noise. We apply our method to an example involving n parties sharing a GHZ-type state on which they carry out measurements and show that for local-hidden variable theories, the amount of super-luminal classical communication c and the detector efficiency eta are constrained by eta 2^(-c/n) = O(n^(-1/6)) even for constant general error probability epsilon = O(1).

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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