量子结构中电子态和极化场的光学调控

发展先进光学手段实现对应力、角度和能量分辨的测量是设备研制以及物性研究的重要基础。金刚石作为第三代半导体，不仅在大功率器件方面具有重要的应用，而且金刚石色心作为理想的单量子光源在量子信息方面也具有广阔的前景。我们通过变温等手段，利用声子辅助荧光上转换实现了金刚石中应力、极化电场的测量以及氮空位电荷态的调控。 手性广泛地存在于自然界中。如果某物体与其镜像不同，则其被称为“手性的”，例如蛋白质、氨基酸、手性药物分子等。圆二色性光谱是一种研究手性的有效且方便的手段，定义为左旋光和右旋光的差分吸收或反射。圆二色性光谱本身在很多领域有着重要的应用，例如信息编码学、生物手性分子结构的表征、纳米结构成像技术等。实验上，我们在可见光波段研究了非手性结构的超材料由于外在手性引起的圆二色性，以及它们和方位角的依赖关系。利用圆二色性光谱实现了等离激元超材料的手性测量。 基于以上研究背景的实际需求，我们设计了相应的实验方案。利用中国科学院半导体所超晶格重点实验室现有的实验设备（如反射式圆二色性光谱测量系统和Jobin-Yvon HR800共聚焦显微拉曼光谱仪等）采集到有效的数据，主要记录了非对称U型和U bar型的超材料方位角依赖的圆二色性(CD)光谱和声子辅助上转换来调控NV色心电荷态的实验观测数据。数据量预计8.56MB /11条。Developing advanced optical techniques for strain, angle, and energy-resolved measurements is a critical foundation for device development and physical property research. Diamond, as a third-generation semiconductor, not only has important applications in high-power devices, but diamond color centers as ideal single-quantum light sources also hold broad prospects in quantum information. We achieved strain and polarization electric field measurements in diamond, as well as the regulation of nitrogen-vacancy (NV) center charge states, via temperature variation and other means using phonon-assisted fluorescence upconversion. Chirality exists widely in nature. An object is called "chiral" if it is different from its mirror image, such as proteins, amino acids, chiral drug molecules, etc. Circular dichroism (CD) spectroscopy is an effective and convenient method for studying chirality, defined as the differential absorption or reflection between left-circularly polarized light and right-circularly polarized light. CD spectroscopy itself has important applications in many fields, such as information coding, characterization of biological chiral molecular structures, nanostructure imaging technology, etc. Experimentally, we studied the circular dichroism induced by extrinsic chirality in achiral metamaterials in the visible light range, as well as their dependence on azimuth angle. We realized chiral characterization of plasmonic metamaterials using CD spectroscopy. Based on the actual needs of the above research background, we designed the corresponding experimental scheme. We collected valid data using the existing experimental equipment in the State Key Laboratory of Superlattices, Institute of Semiconductors, Chinese Academy of Sciences (such as the reflective circular dichroism spectroscopy measurement system and Jobin-Yvon HR800 confocal micro-Raman spectrometer, etc.). The data mainly record the azimuth angle-dependent circular dichroism (CD) spectra of asymmetric U-shaped and U-bar-shaped metamaterials, as well as the experimental observation data of regulating NV center charge states via phonon-assisted upconversion. The total data volume is expected to be 8.56 MB across 11 entries.

搜集汇总

背景与挑战

背景概述

该数据集聚焦于量子结构中电子态和极化场的光学调控研究。它通过声子辅助荧光上转换技术测量了金刚石的应力与极化电场，并调控了氮空位电荷态；同时利用圆二色性光谱分析了非手性超材料的手性特性。数据集包含相关实验观测数据，总数据量约为8.56MB。