Strange weak values
Strange weak values
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DOI：
10.1088/1751-8113/43/38/385307
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发表时间：
2010-09-24
影响因子：
2.1
通讯作者：
Shikano, Yutaka
中科院分区：
文献类型：
--
作者：
Hosoya, Akio;Shikano, Yutaka
我们发展了弱价值的形式理论，重点关注反事实过程中的一致性条件和概率解释。我们提出了选择后选择状态的条件，以给出给定投影算子的负弱值和一般可观察值的奇怪值。总体框架应用于哈代悖论和自旋1/2系统，以明确解决反事实和奇怪的弱价值观问题。表征悖论的反事实论证指定了预选状态，而一组完整的后选状态则阐明了奇怪的弱值是如何出现的。
We develop a formal theory of the weak values with emphasis on the consistency conditions and a probabilistic interpretation in the counter-factual processes. We present the condition for the choice of the post-selected state to give a negative weak value of a given projection operator and strange values of an observable in general. The general framework is applied to Hardy's paradox and the spin-1/2 system to explicitly address the issues of counter-factuality and strange weak values. The counter-factual arguments which characterize the paradox specify the pre-selected state, and a complete set of the post-selected states clarifies how the strange weak values emerge.