Single-particle nonlocality and entanglement with the vacuum
Single-particle nonlocality and entanglement with the vacuum
复制标题
单粒子非定域性和与真空的纠缠
DOI：
10.1103/physreva.64.042106
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发表时间：
2001
影响因子：
2.9
通讯作者：
L. Sánchez‐Soto
中科院分区：
文献类型：
--
作者：
G. Bjork;P. Jonsson;L. Sánchez‐Soto
我们提出了一个单粒子实验，这是相当于传统的两个粒子的实验，用来证明违反贝尔不等式。因此，我们认为量子力学的非定域性可以通过单粒子态来证明。这种主张的有效性在文献中进行了讨论，但没有达成明确的共识。我们表明，分歧可以追溯到什么样的实验的总状态的一部分分配到（宏观）测量仪器。然而，通过对测量过程的传统和合理的解释，人们得出这样的结论，即使是单个粒子也可以显示出非局部性质。
We propose a single-particle experiment that is equivalent to the conventional two-particle experiment used to demonstrate a violation of Bell's inequalities. Hence, we argue that quantum mechanical nonlocality can be demonstrated by single-particle states. The validity of such a claim has been discussed in the literature, but without reaching a clear consensus. We show that the disagreement can be traced to what part of the total state of the experiment one assigns to the (macroscopic) measurement apparatus. However, with a conventional and legitimate interpretation of the measurement process one is led to the conclusion that even a single particle can show nonlocal properties.