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arXiv quant-ph/0009016quant-ph
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宏观不确定性测量的贝尔不等式违反:违反宏观局部实在性意味着什么?

Violations of Bell Inequalities for Measurements with Macroscopic Uncertainties: What does it Mean to Violate Macroscopic Local Realism?

M. D. Reid

摘要:

我们建议测试“宏观局域实在论”的前提,当光子数的测量仅精确到$n$阶光子的不确定性时,这足以导出贝尔不等式,其中$n$是宏观的。宏观局部实在论在最初的爱因斯坦-波多尔斯基-罗森论证的语境中只足以暗示具有宏观不确定性的模糊的“实在的要素”。因此,我们展示了在宏观不确定性的存在下,局部实在论的违反如何意味着“宏观局部实在论”的失败。提出了违反这种宏观局域实在论的量子态。

英文摘要:

We suggest to test the premise of ``macroscopic local realism'' which is sufficient to derive Bell inequalities when measurements of photon number are only accurate to an uncertainty of order $n$ photons, where $n$ is macroscopic. Macroscopic local realism is only sufficient to imply, in the context of the original Einstein-Podolsky-Rosen argument, fuzzy ``elements of reality'' which have a macroscopic indeterminacy. We show therefore how the violation of local realism in the presence of macroscopic uncertainties implies the failure of ``macroscopic local realism''. Quantum states violating this macroscopic local realism are presented.

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