论文标题
通过弱价值直接实验换向关系
Direct experimental test of commutation relation via weak value
论文作者
论文摘要
规范的换向关系是量子理论的标志，海森堡的不确定性关系是它的直接结果。但是，尽管它在量子理论中具有基本作用，但令人惊讶的是，其真正的直接实验测试迄今尚未进行。在本文中，我们提出了一种新的方案，可以通过利用弱测量的概念来直接测试两个二分法可观察物之间的规范换向关系。适当配制的弱价值的假想部分可以实现此直接测试。在中子干涉仪实验中可观察到的路径Qubit的弱值的测量用于验证该方法。该实验是使用中子干涉测量设置中新开发的技术实现的，其中中子的自旋/能量的自由度是Ancilla。
The canonical commutation relation is the hallmark of quantum theory and Heisenberg's uncertainty relation is a direct consequence of it. But despite its fundamental role in quantum theory, surprisingly, its genuine direct experimental test has hitherto not been performed. In this article, we present a novel scheme to directly test the canonical commutation relation between two dichotomic observables, by exploiting the notion of weak measurement. The imaginary part of a suitably formulated weak value enables this direct test. The measurement of the weak value of a path-qubit observable in a neutron interferometer experiment is used to verify the approach. The experiment is realized using a newly developed technique in our neutron interferometric setup where the neutron's spin/energy degree of freedom serves as ancilla.
