Quantum photonics in triangular-cross-section nanodevices in silicon carbide

Utilizing photonic band gap in triangular silicon carbide structures for efficient quantum nanophotonic hardware

Silicon carbide is among the leading quantum information material platforms due to the long spin coherence and single-photon emitting properties of its color center defects. Applications of silicon carbide in quantum networking, computing, and sensing rely on the efficient collection of color center emission into a single optical mode. Recent hardware development in this platform has focused on angle-etching processes that preserve emitter properties and produce triangularly shaped devices. However, little is known about the light propagation in this geometry. We explore the formation of photo…

用于量子信息处理的碳化硅三角形截面分束器

Triangular Cross-Section Beam Splitters in Silicon Carbide for Quantum Information Processing

本研究针对可扩展量子硬件需求，基于碳化硅三角形截面色心光子结构，建模优化50:50低损耗分束器，并通过离子束刻蚀制备验证可行性，为量子光学操作提供器件方案。

三角截面光栅耦合器用于碳化硅集成量子纳米光子硬件

Triangular cross-section grating couplers for integrated quantum nanophotonic hardware in silicon carbide

本研究设计并制造了碳化硅三角截面波导的鱼骨形光栅耦合器，实验效率达24%，为量子纳米光子器件中色心光的有效提取提供了可扩展方案。

Triangular Quantum Photonic Devices with Integrated Detectors in Silicon Carbide

Triangular cross-section SiC photonic devices have been studied as an efficient and scalable route for integration of color centers into quantum hardware. In this work, we explore efficient collection and detection of color center emission in a triangular cross-section SiC waveguide by introducing a photonic crystal mirror on its one side and a superconducting nanowire single photon detector (SNSPD) on the other. Our modeled triangular cross-section devices with a randomly positioned emitter have a maximum coupling efficiency of 89 % into the desired optical mode and a high coupling efficiency…

碳化硅中独立光子器件与色心的晶圆级集成

Wafer-Scale Integration of Freestanding Photonic Devices with Color Centers in Silicon Carbide

针对色心光子器件难以大规模集成的问题，本文提出在4H-SiC上采用倾斜离子束刻蚀的5英寸晶圆工艺，实现三角形截面光子器件制备，并验证色心光学特性保持不变。