Truncated Metallo-Dielectric Omnidirectional Reflector: Collecting Single Photons in the Fundamental Gaussian Mode with 95% Efficiency,ACS Photonics

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Truncated Metallo-Dielectric Omnidirectional Reflector: Collecting Single Photons in the Fundamental Gaussian Mode with 95% Efficiency
ACS Photonics ( IF 6.5 ) Pub Date : 2020-08-04 , DOI: 10.1021/acsphotonics.0c00730
Wancong Li ₁ , Luis Morales-Inostroza _{2,

3} , Weiwang Xu ₁ , Pu Zhang ₁ , Jan Renger ₂ , Stephan Götzinger _{2,

3,

4} , Xue-Wen Chen ₁

Affiliation

We propose a novel antenna structure that funnels single photons from a single emitter with unprecedented efficiency into a low-divergence fundamental Gaussian mode. Our device relies on the concept of creating an omnidirectional photonic bandgap to inhibit unwanted large-angle emission and to enhance small-angle defect-guided-mode emission. The new photon collection strategy is intuitively illustrated, rigorously verified, and optimized by implementing an efficient, body-of-revolution, finite-difference, time-domain method for in-plane dipole emitters. We investigate a few antenna designs to cover various boundary conditions posed by fabrication processes or material restrictions and theoretically demonstrate that collection efficiencies into the fundamental Gaussian mode exceeding 95% are achievable. Our antennas are broadband, insensitive to fabrication imperfections and compatible with a variety of solid-state emitters such as organic molecules, quantum dots, and defect centers in diamond. Unidirectional and low-divergence Gaussian-mode emission from a single emitter may enable the realization of a variety of photonic quantum computer architectures as well as highly efficient light–matter interfaces.

中文翻译：

截断的金属介电全向反射器：以基本高斯模式以95％的效率收集单光子

我们提出了一种新颖的天线结构，该结构以前所未有的效率将单个光子从单个发射器集中到低散度基本高斯模式中。我们的设备依赖于创建全方位光子带隙的概念，以抑制有害的大角度发射并增强小角度缺陷引导模式发射。通过为平面内偶极子发射器实施一种有效的旋转体，有限差分，时域方法，直观地说明，严格验证和优化了新的光子收集策略。我们研究了几种天线设计，以涵盖由制造过程或材料限制引起的各种边界条件，并从理论上证明，可以实现超过95％的基本高斯模式的收集效率。我们的天线是宽带的对制造缺陷不敏感，并且与金刚石中的各种固态发射器（例如有机分子，量子点和缺陷中心）兼容。来自单个发射器的单向和低散度高斯模式发射可以实现多种光子量子计算机体系结构以及高效的光-质界面。

更新日期：2020-09-16

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