Center for Life Nano Science@Sapienza, Istituto Italiano di Tecnologia, Viale Regina Elena, 291 00161 Roma (RM) Italia.
Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, CA 92093, USA.
Sci Rep. 2016 Jul 20;6:29918. doi: 10.1038/srep29918.
A single-photon beating with itself can produce even the most elaborate optical fringe pattern. However, the large amount of information enclosed in such a pattern is typically inaccessible, since the complete distribution can be visualized only after many detections. In fact this limitation is only true for delocalized patterns. Here we demonstrate how reconfigurable localized optical patterns allow to encode up to 6 bits of information in disorder-induced high transmission channels, even using a small number of photon counts. We developed a quantum key distribution scheme for fiber communication in which high information capacity is achieved through position and momentum complementarity.
单光子自相互作用可以产生即使是最复杂的光学条纹图案。然而，这种图案所包含的大量信息通常是无法获取的，因为只有在进行多次探测后才能观察到完整的分布。实际上，这种局限性仅适用于非局域化的图案。在这里，我们展示了如何在无序诱导的高传输通道中使用可重构的局域光学图案来编码多达 6 位的信息，即使使用少量的光子计数。我们开发了一种用于光纤通信的量子密钥分发方案，其中通过位置和动量互补来实现高信息容量。
