Video recording true single-photon double-slit interference
Video recording true single-photon double-slit interference
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DOI：
10.1119/1.4955173
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发表时间：
2016-09-01
影响因子：
0.9
通讯作者：
Spalding, Gabriel C.
中科院分区：
文献类型：
--
作者：
Aspden, Reuben S.;Padgett, Miles J.;Spalding, Gabriel C.
市售相机没有足够低的暗噪声来直接捕获单光子水平的双缝干涉。在这项工作中，相机噪声水平显着降低激活相机只有当光子的存在已被检测到的独立检测的时间相关的光子产生的参数下转换。这种触发方案提供了杨氏单光子双缝实验直接视频成像所需的改进，从而实现了这一基础演示的澄清版本。我们提出的视频数据的不断变化的干扰模式。此外，我们介绍了这个实验的变化，旨在促进空间相干性在这样的测量中发挥的作用的讨论，强调单光子测量的互补方面，并突出下转换光子之间的横向位置和动量相关性的作用，包括“鬼”成像和衍射的例子。(C)2016年美国物理教师协会
Commercially available cameras do not have a low-enough dark noise to directly capture double-slit interference at the single photon level. In this work, camera noise levels are significantly reduced by activating the camera only when the presence of a photon has been detected by the independent detection of a time-correlated photon produced via parametric down-conversion. This triggering scheme provides the improvement required for direct video imaging of Young's double-slit experiment with single photons, allowing clarified versions of this foundational demonstration. We present video data of the evolving interference patterns. Also, we introduce variations on this experiment aimed at promoting discussion of the role spatial coherence plays in such a measurement, emphasizing complementary aspects of single-photon measurement and highlighting the roles of transverse position and momentum correlations between down-converted photons, including examples of "ghost" imaging and diffraction. (C) 2016 American Association of Physics Teachers.