仿生非周期纳米光子器件中单量子发射极的控制
Control of single quantum emitters in bio-inspired aperiodic nano-photonic devices
摘要：
增强芯片上的光-物质相互作用对于研究纳米和量子光学效应以及实现集成器件（例如，用于经典和量子光子学、传感和能量收集应用）至关重要。工程纳米器件能够有效地限制光和控制单个发射体的自发发射动力学，这对于腔量子电动力学实验以及经典和量子光源的发展至关重要。在这里，我们报告的演示增强光物质相互作用和珀塞尔效应的芯片上，基于生物启发的非周期性设备制造的氮化硅和砷化镓。内部光源，即氮化硅和砷化铟单量子点中的光学活性缺陷中心，用于通过显微光致发光光谱成像和表征由具有Vogel螺旋几何形状的光子膜限定的各个光学模式。通过研究测量的光学共振的统计数据，与严格的多重散射理论合作，我们观察到对数正态分布，并报告品质因数值高达2201+/-443。在此基础上，我们进一步研究了单个半导体量子点与受限光模的耦合。我们的研究结果表明，腔量子电动力学效应提供强有力的修改的自发发射衰减的单光跃迁：我们显示控制的衰减寿命的单发射器的动态范围达到20。我们的研究结果提高了对发光Vogel螺旋系统的基本物理特性的理解，显示了它们在量子光子器件中的应用，并为进一步开发经典和量子有源器件奠定了基础。
英文摘要：
Enhancing light-matter interactions on a chip is of paramount importance to study nano- and quantum optics effects and to realise integrated devices, for instance, for classical and quantum photonics, sensing and energy harvesting applications. Engineered nano-devices enable the efficient confinement of light and the control of the spontaneous emission dynamics of single emitters, which is crucial for cavity quantum electrodynamics experiments and for the development of classical and quantum light sources. Here, we report on the demonstration of enhanced light-matter interaction and Purcell effects on a chip, based on bio-inspired aperiodic devices fabricated in silicon nitride and gallium arsenide. Internal light sources, namely optically-active defect centers in silicon nitride and indium arsenide single quantum dots, are used to image and characterize, by means of micro-photoluminescence spectroscopy, the individual optical modes confined by photonic membranes with Vogel-spiral geometry. By studying the statistics of the measured optical resonances, in partnership with rigorous multiple scattering theory, we observe log-normal distributions and report quality factors with values as high as 2201+/-443. Building on the strong light confinement achieved in this novel platform, we further investigate the coupling of single semiconductor quantum dots to the confined optical modes. Our results show cavity quantum electrodynamics effects providing strong modifications of the spontaneous emission decay of single optical transitions: we show control of the decay lifetime of single emitters with a dynamic range reaching 20. Our findings improve the understanding of the fundamental physical properties of light-emitting Vogel-spiral systems, show their application to quantum photonic devices, and form the basis for the further development of classical and quantum active devices on a chip.
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