In a recent paper, Durr [Phys. Rev. A 64, 042113 (2001)] proposed an interesting multibeam generalization of the quantitative formulation of interferometric wave-particle duality, discovered by Englert for two-beam interferometers. The proposed generalization is an inequality that relates a generalized measure of the fringe visibility to certain measures of the maximum amount of which-way knowledge that can be stored in a which-way detector. We construct an explicit example where, with three beams in a pure state, the scheme proposed by Durr leads to the possibility of an ideal which-way detector that can achieve a better path discrimination at the same time as a better fringe visibility. In our opinion, this seems to be in contrast with the intuitive idea of complementarity, as it is implemented in the two-beams case, where an increase in path discrimination always implies a decrease of fringe visibility, if the beams and the detector are in pure states. [References: 8]
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机译：在最近的论文中，Durr [Phys。 Rev. A 64，042113（2001）]提出了一种有趣的多光束概图，用于概括干涉式波粒对偶性的定量公式，这是由Englert发现的用于两束干涉仪的。所提出的概括是一种不等式，其将条纹可见度的广义度量与可以存储在双向探测器中的最大双向知识的某些度量相关联。我们构建了一个明确的示例，其中在纯状态下使用三束光束，由Durr提出的方案导致了理想的单向探测器的可能性，该探测器可以同时实现更好的路径辨别力和更好的条纹可见性。我们认为，这似乎与直觉性的互补思想形成了鲜明对比，因为它是在两束光束的情况下实现的，如果光束和检测器位于同一光束中，则路径分辨力的提高总是意味着条纹可见性的降低。纯状态。 [参考：8]
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