Collaborative Research: DMREF: Hybrid Materials for Superfluorescent Quantum Emitters

合作研究：DMREF：超荧光量子发射器的混合材料

• 批准号: 2323804
• 负责人: Yosuke Kanai
• 金额: $ 50万
• 依托单位: University of North Carolina at Chapel Hill
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-10-01 至 2027-09-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2323804&HistoricalAwards=false
• 关键词: Collaborative; Research; DMREF; Hybrid; Materials

Non-technical Description: Particles interact at the smallest scale according to the laws of quantum physics, exhibiting wave-like properties. However, when a large number of particles cluster, their quantum characteristics are lost. Some materials, show quantum properties at very low temperatures. Notable examples are superconductors and superfluids. Unfortunately, the low temperature requirement limits their practical use in technology. Superfluorescence, a similar quantum effect involving light emission from a group of quantum emitters, has potential applications in entangled photon sources and tunable intense light sources. Surprisingly, superfluorescence has been achieved at room temperature using hybrid materials made of inorganic lead halide perovskites and organic molecules. This project aims to discover quantum materials that exhibit room temperature superfluorescence tunable across the visible spectra in the broader range of hybrid materials. The project serves the goals of the Materials Genomics Initiative by collecting materials data and scientific understanding and training an associated research and development workforce. The educational activities involve field trips from high schools serving economically disadvantaged communities to increase interest in STEM careers. Using research experience for undergraduate programs and collaboration with historically black colleges and universities in the vicinity, summer interns will be recruited. Annually, theory and experiment workshops will be organized to train early-career researchers on topics related to quantum phenomena in hybrid materials. A major broader impact of the project is the addition of materials data that relates macroscopic quantum properties to material properties in a general, open database "HybriD3," which is dedicated to providing curated materials data for the materials research and development community.Technical Description: The research program will advance the current understanding of quantum materials and will establish a design space for room-temperature superfluorescent quantum emitters. The program brings together four teams with expertise in material synthesis, quantum property characterization by laser spectroscopies, first principles theory and computational materials simulations to investigate superfluorescence in a range of hybrid metal halide perovskite (HMHP) materials. In superfluorescence, the whole phase transition process, from the initial excitation of electron-hole pairs to the formation of a macroscopic coherence and its radiation, is measurable by spectroscopic tools in real-time. As a result, superfluorescence provides a window into discovering sophisticated interplay of material properties such as chemical, and mesoscopic structure, quantum confinement, and electron-lattice interactions and their impact on the collective behavior of dipoles. HMHP are ideal for this study because they form a versatile platform that enables material tunability from atomistic scale to mesoscale through solution processing. By systematically studying superfluorescent emitting HMHP materials with tuned material properties and calculating the fundamental electron-electron and electron-lattice interactions, this program will produce reusable data that relates characteristics, such as critical temperature, threshold excitation density, color tunability, and spatial and temporal coherence of superfluorescence to material characteristics. Ultimately, insights derived from this project may make superfluorescence usable as a quantum optical effect in photonic devices.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

非技术描述：粒子根据量子物理学定律以最小的比例相互作用，表现出波浪状特性。但是，当大量颗粒群集时，它们的量子特性就会丢失。某些材料在非常低的温度下显示量子特性。著名的例子是超导体和超流体。不幸的是，低温要求限制了他们在技术中的实际使用。超荧光是一种类似的量子效应，涉及一组量子发射器的光发射，在纠缠的光子源和可调的强光源中具有潜在的应用。令人惊讶的是，使用无机铅卤化物钙钛矿和有机分子制成的混合材料在室温下实现了超荧光。该项目旨在发现在更广泛的杂种材料范围内可在可见光谱上调整室温超荧光的量子材料。该项目通过收集材料数据以及科学理解和培训相关的研究与发展劳动力来实现材料基因组学计划的目标。这些教育活动涉及高中的实地考察，为经济弱势社区提供服务，以增加对STEM职业的兴趣。利用研究经验为本科课程，并与附近历史悠久的黑人学院和大学合作，将招募暑期实习生。每年，将组织理论和实验研讨会，以培训早期研究人员有关混合材料中与量子现象有关的主题。该项目的主要更广泛的影响是添加将宏观量子特性与材料特性与材料特性联系起来的材料数据，该数据库“ Hybrid3”致力于为材料研究和开发社区提供策划的材料数据。技术描述：该研究计划将促进量子材料的当前理解，并将为房间量的量子量化量量量；该计划汇集了四个在材料合成，激光光谱法，第一原理理论和计算材料模拟方面具有专业知识的团队，以研究一系列混合金属卤化物钙钛矿（HMHP）材料中的超荧光。在超荧光中，从电子孔对的初始激发到形成宏观连贯性及其辐射的整个相变过程，可以实时测量光谱工具。结果，超荧光为发现材料特性的复杂相互作用，例如化学和介观结构，量子限制以及电子静态相互作用及其对偶极子集体行为的影响。 HMHP是这项研究的理想选择，因为它们形成了一个多功能平台，可以通过解决方案处理从原子量表到中尺度的物质可调性。通过系统地研究具有调谐材料特性的超荧光发射HMHP材料，并计算基本的电子电子和电子 - 局势相互作用，该程序将产生可重复使用的数据，这些数据与特征，例如临界温度，阈值激发密度，色彩可调性，空间和时间的相干性，以及超级荧光特征的特征。最终，从该项目获得的见解可能会使超荧光可作为光子设备的量子光学效应。该奖项反映了NSF的法定任务，并且被认为是值得通过基金会的知识分子和更广泛影响的评估评估标准来通过评估来获得支持的。