Photonic crystals and metasurfaces for quantum technology applications

这项拟议的研究将设计、制造和测试基于光子晶体和光学亚表面的纳米光子结构，利用这些结构建立和展示允许工程和增强光-物质相互作用的系统，并通过实验探索这些结构在量子技术中的应用，如新型激光器和非经典光源、不同量子信息处理平台之间的低损耗接口和量子传感。该研究将探索以下方向：1)基于与加载了室温和激光冷却原子系综的空芯光波导集成的光子晶体平板集成的偏振和波长二色性法布里-珀罗光谐振器(腔)；2)基于光学介面的自由空间偏振和波长二色性法布里-珀罗光谐振器；3)用于定向控制单个固体和原子量子发射器光子发射的光学介面；基于光子晶体和超表面结构的光学谐振器的组装和测试；向这些谐振器注入室温气体和加载激光冷却原子；将量子点和钻石缺陷等固态发射器耦合到这些谐振器和发射导向结构；开发和展示新型量子光学计划，利用这些光子结构的独特性质用于单光子波长转换、光子检测、量子存储器、量子传感以及非经典光产生和非传统激光；以及研究上述平台的应用，推动实用器件的原理证明演示。

The proposed research will design, fabricate, and test nanophotonic structures based on photonic crystals and optical metasurfaces, use these structures to build and demonstrate systems that allow engineering and enhancement of light-matter interactions, and experimentally explore applications of these structures for quantum technologies, such as new types of lasers and non-classical light sources, low-loss interfaces between different quantum information processing platforms, and quantum sensing. The research will explore the following directions: 1) Polarization- and wavelength-dichroic Fabry-Perot optical resonators (cavities) based on photonic-crystal slabs integrated with hollow-core optical waveguides loaded with room-temperature and laser-cooled atomic ensembles 2) Free-space polarization- and wavelength-dichroic Fabry-Perot optical resonators based on optical metasurfaces 3) Optical metasurfaces for directional control of photon emission from individual solid-state and atomic quantum emitters Activities covered in the proposed research directions will include design (based on `conventional' and inverse design techniques) and nanofabrication of these dichroic and chiral photonic-crystal and metasurface structures; assembly and testing of optical resonators based on photonic-crystal and metasurface structures; injection of room temperature gases and loading of laser-cooled atoms into these resonators; coupling solid-state emitters such as quantum dots and diamond defects to these resonators and emission-directing structures; development and demonstrations of novel quantum optics schemes that utilize the unique properties of these photonic structures for applications such as single-photon wavelength conversion, photon detection, quantum memories, quantum sensing, as well as for non-classical light generation and non-conventional lasing; and studies of applications of the above-described platforms with a push toward proof-of-principle demonstrations of practical devices.