Low-Divergence hBN Single-Photon Source with a 3D-Printed Low-Fluorescence Elliptical Polymer Microlens,Nano Letters

当前位置： X-MOL 学术 › Nano Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Low-Divergence hBN Single-Photon Source with a 3D-Printed Low-Fluorescence Elliptical Polymer Microlens
Nano Letters ( IF 9.6 ) Pub Date : 2022-11-29 , DOI: 10.1021/acs.nanolett.2c03001
Johann A Preuß ₁ , Helge Gehring _{1,

2} , Robert Schmidt ₁ , Lin Jin _{1,

2} , Daniel Wendland _{1,

2} , Johannes Kern ₁ , Wolfram H P Pernice _{1,

2,

3} , Steffen Michaelis de Vasconcellos _{1,

4} , Rudolf Bratschitsch ₁

Affiliation

Efficiently collecting light from single-photon emitters is crucial for photonic quantum technologies. Here, we develop and use an ultralow fluorescence photopolymer to three-dimensionally print micrometer-sized elliptical lenses on individual precharacterized single-photon emitters in hexagonal boron nitride (hBN) nanocrystals, operating in the visible regime. The elliptical lens design beams the light highly efficiently into the far field, rendering bulky objective lenses obsolete. Using back focal plane imaging, we confirm that the emission is collimated to a narrow low-divergence beam with a half width at half-maximum of 2.2°. Using photon correlation measurements, we demonstrate that the single-photon character remains undisturbed by the polymer lens. The strongly directed emission and increased collection efficiency is highly beneficial for quantum optical experiments. Furthermore, our approach paves the way for a highly parallel fiber-based detection of single photons from hBN nanocrystals.

中文翻译：

具有 3D 打印低荧光椭圆聚合物微透镜的低发散 hBN 单光子源

有效地收集来自单光子发射器的光对于光子量子技术至关重要。在这里，我们开发并使用超低荧光光聚合物在六方氮化硼 (hBN) 纳米晶体中的单个预先表征的单光子发射器上三维打印微米大小的椭圆透镜，在可见光范围内运行。椭圆透镜设计将光线高效地射入远场，从而淘汰了笨重的物镜。使用后焦平面成像，我们确认发射被准直为窄的低发散光束，半峰半宽为 2.2°。使用光子相关测量，我们证明了单光子特性不受聚合物透镜的干扰。强定向发射和提高收集效率对量子光学实验非常有益。此外，我们的方法为基于光纤的高度并行检测来自六方氮化硼纳米晶体的单光子铺平了道路。

更新日期：2022-11-29

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11