携带轨道角动量的单光子的多模量子态。

Multimode quantum states with single photons carrying orbital angular momentum.

机构信息

Beijing Key Laboratory of Nanophotonics & Ultrafine Optoelectronic Systems, School of Physics, Beijing Institute of Technology, Beijing, 100081, China.

School of Opto-Electronics, Beijing Institute of Technology, Beijing, 100081, China.

出版信息

Sci Rep. 2017 Jun 15;7(1):3601. doi: 10.1038/s41598-017-03239-1.

DOI:10.1038/s41598-017-03239-1

PMID:28620211

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5472612/

Abstract

We propose and experimentally demonstrate a scheme for generating multimode quantum states with single photons carrying orbital angular momentum (OAM). Various quantum states have been realized by superposing multiple OAM modes of single photons in two possible paths. These quantum states exhibit NOON-like "super-resolving" interference behavior for the multiple OAM modes of single photons. Compared with the NOON states using many photons, these states are not only easily prepared, but also robust to photon losses. They may find potential applications in quantum optical communication and recognizing defects or objects. The method to identify a particular kind of defect has been demonstrated both theoretically and experimentally.

摘要

我们提出并实验演示了一种利用携带轨道角动量（OAM）的单光子产生多模量子态的方案。通过在两条可能路径中叠加单光子的多个 OAM 模式，实现了各种量子态。这些量子态表现出多模单光子的类 NOON“超分辨”干涉行为。与使用多光子的 NOON 态相比，这些态不仅易于制备，而且对光子损耗具有鲁棒性。它们可能在量子光学通信和识别缺陷或物体中找到潜在的应用。已经从理论和实验上证明了用于识别特定类型缺陷的方法。