光学
物理
像面
费曼图
亮度
干扰(通信)
平面(几何)
光圈(计算机存储器)
狭缝
显微镜
电子
图像(数学)
计算机科学
数学
量子力学
计算机视觉
几何学
电信
频道(广播)
声学
作者
Amir H. Tavabi,Chris Boothroyd,Emrah Yücelen,Stefano Frabboni,Gian Carlo Gazzadi,Rafal E. Dunin‐Borkowski,Giulio Pozzi
标识
DOI:10.1038/s41598-019-43323-2
摘要
Abstract The key features of quantum mechanics are vividly illustrated by the Young-Feynman two-slit thought experiment, whose second part discusses the recording of an electron distribution with one of the two slits partially or totally closed by an aperture. Here, we realize the original Feynman proposal in a modern electron microscope equipped with a high brightness gun and two biprisms, with one of the biprisms used as a mask. By exciting the microscope lenses to conjugate the biprism plane with the slit plane, observations are carried out in the Fraunhofer plane with nearly ideal control of the covering of one of the slits. A second, new experiment is also presented, in which interference phenomena due to partial overlap of the slits are observed in the image plane. This condition is obtained by inserting the second biprism between the two slits and the first biprism and by biasing it in order to overlap their images.
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