基于磷化铟衬底的分布布拉格反射镜上的量子点作为第三通信窗口的单光子发射器

InP-Substrate-Based Quantum Dashes on a DBR as Single-Photon Emitters at the Third Telecommunication Window.

作者信息

Wyborski Paweł, Musiał Anna, Mrowiński Paweł, Podemski Paweł, Baumann Vasilij, Wroński Piotr, Jabeen Fauzia, Höfling Sven, Sęk Grzegorz

机构信息

Laboratory for Optical Spectroscopy of Nanostructures, Department of Experimental Physics, Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.

Technische Physik, University of Würzburg and Wilhelm-Conrad-Röntgen-Research Center for Complex Material Systems, Am Hubland, D-97074 Würzburg, Germany.

出版信息

Materials (Basel). 2021 Feb 5;14(4):759. doi: 10.3390/ma14040759.

DOI:10.3390/ma14040759

PMID:33562831

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7915660/

Abstract

We investigated emission properties of photonic structures with InAs/InGaAlAs/InP quantum dashes grown by molecular beam epitaxy on a distributed Bragg reflector. In high-spatial-resolution photoluminescence experiment, well-resolved sharp spectral lines are observed and single-photon emission is detected in the third telecommunication window characterized by very low multiphoton events probabilities. The photoluminescence spectra measured on simple photonic structures in the form of cylindrical mesas reveal significant intensity enhancement by a factor of 4 when compared to a planar sample. These results are supported by simulations of the electromagnetic field distribution, which show emission extraction efficiencies even above 18% for optimized designs. When combined with relatively simple and undemanding fabrication approach, it makes this kind of structures competitive with the existing solutions in that spectral range and prospective in the context of efficient and practical single-photon sources for fiber-based quantum networks applications.

摘要

我们研究了通过分子束外延在分布式布拉格反射器上生长的具有InAs/InGaAlAs/InP量子点的光子结构的发射特性。在高空间分辨率光致发光实验中，观察到了分辨良好的尖锐光谱线，并在以非常低的多光子事件概率为特征的第三通信窗口中检测到了单光子发射。以圆柱形台面形式的简单光子结构上测量的光致发光光谱显示，与平面样品相比，强度显著增强了4倍。这些结果得到了电磁场分布模拟的支持，该模拟表明，对于优化设计，发射提取效率甚至高于18%。当与相对简单且要求不高的制造方法相结合时，这种结构在该光谱范围内与现有解决方案具有竞争力，并且在用于基于光纤的量子网络应用的高效实用单光子源方面具有前景。