CAREER: Towards room-temperature quantum simulators enabled by halide perovskites

职业：迈向由卤化物钙钛矿实现的室温量子模拟器

• 批准号: 2143041
• 负责人: Wei Bao
• 金额: $ 75.67万
• 依托单位: University of Nebraska-Lincoln
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-07-01 至 2024-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2143041&HistoricalAwards=false
• 关键词: CAREER; Towards; room; temperature; quantum

This award is funded in whole or in part under the American Rescue Plan Act of 2021 (Public Law 117-2).Non-Technical DescriptionQuantum effects are any phenomena that typically happen at small scales and cannot be explained by classical mechanics. There are many important research problems involving quantum effects that classical computers cannot fully solve. For example, the rational design of complex materials can require understanding the collective behavior of many atomic components and their quantum interactions. A quantum simulator is a device that can actively consider the complex interactions (quantum effects) to model these real-world complex systems in a programmable fashion. However, traditionally, these quantum simulators have to work at ultralow temperatures, making them expensive to prepare and operate. This CAREER project aims to transform the field of quantum simulators through a combined research and education program focused on novel optical materials and their integration approaches for realizing quantum simulators at room temperature. Specifically, the PI will synthesize novel new optical materials, integrate them with photonic structures, demonstrate functional room-temperature quantum simulators, and use them to study the rich exotic materials properties that are previously challenging to fully understand. An integrated education program will also expand quantum science and technology accessibility in Nebraska by working with teachers via workshops and labs to provide them with a scientific frontier perspective. Additionally, this program will engage undergraduate and high school students in workshops and internships, with a particular focus on first-generation college students and students from traditionally underrepresented groups. These efforts aim to increasing the diversity and competitiveness of the future scientific workforce.Technical description: The goals of this project are to reveal quantum phenomena previously observed only at low-temperature at room temperature (RT) with excitonic halide perovskites materials in the optical cavities and build a competitive quantum optics education program at the University of Nebraska-Lincoln. Strong coupling between excitons and photons in high-quality optical cavities produces a new hybrid half-matter, half-light quasiparticle called exciton-polariton that exhibits ultrasmall effective mass inherited from the photon and significant nonlinearity inherited from the exciton. These qualities allow exciton-polaritons to undergo a transition to Bose-Einstein condensation at RT, potentially enabling a broad range of applications, such as optical analog quantum simulators and low threshold polariton lasers. The project will significantly expand our understanding of how excitons interact at RT and form stable polariton quantum liquid in these new perovskite material systems. It also provides a fantastic photonic platform for exploring the macroscopic quantum phenomenon at RT without requiring complicated and expensive ultracold atoms, cryostats, or molecular beam epitaxy growth vacuum chambers. Lastly, the tunable mode splitting in perovskite microcavities behaves as an effective magnetic field on photon spin, enabling studies on synthetic non-Abelian gauge fields and topological physics at RT. This research, which will utilize nanofabrication, materials synthesis, and optical spectroscopy methods to study halide perovskite materials, promises to transform the field of RT polaritonics and quantum simulators. It will also undergird an integrated education program focusing on quantum photonics. A graduate course, various outreach pathways, and a K-12 teacher workshop, all featuring research frontiers in quantum photonics, will be developed with the ultimate goal of building a diverse, globally competitive workforce pipeline on quantum science, a critical knowledge frontier for the nation.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.

该奖项是根据2021年《美国救援计划法》的全部或部分资助的（公共法117-2）。非技术描述效应是通常在小规模上发生的任何现象，无法通过古典力学来解释。经典计算机无法完全解决涉及量子效应的重要研究问题。例如，复杂材料的理性设计需要了解许多原子成分的集体行为及其量子相互作用。量子模拟器是一种可以积极考虑复杂交互（量子效应）的设备，以可编程方式对这些现实世界中的复杂系统进行建模。但是，传统上，这些量子模拟器必须在超高温度下工作，使其准备和操作昂贵。该职业项目旨在通过侧重于新颖的光学材料及其在室温下实现量子模拟器的整合方法来改变量子模拟器的领域。具体而言，PI将合成新型的新光学材料，将它们与光子结构集成在一起，展示功能性室温量子模拟器，并使用它们来研究以前具有挑战性的富式外来材料属性。一项综合教育计划还将通过研讨会和实验室与教师合作，为他们提供科学边界的观点，从而扩大内布拉斯加州的量子科学和技术的可及性。此外，该计划将吸引本科生和高中生参加研讨会和实习，特别关注第一代大学生和来自传统代表性不足的团体的学生。 These efforts aim to increasing the diversity and competitiveness of the future scientific workforce.Technical description: The goals of this project are to reveal quantum phenomena previously observed only at low-temperature at room temperature (RT) with excitonic halide perovskites materials in the optical cavities and build a competitive quantum optics education program at the University of Nebraska-Lincoln.高质量光腔中的激子和光子之间的强耦合产生了一种新的杂种半叶，半灯的准粒子，称为exciton-polariton，表现出从光子继承的超质有效质量，并从激子遗传的非线性遗传。这些质量使激子 - 摩他可以在RT处过渡到Bose-Einstein凝结，从而有可能实现广泛的应用，例如光学模拟量子模拟器和低阈值polarthold polariton激光器。该项目将大大扩展我们对激发子在RT相互作用的理解，并在这些新的钙钛矿材料系统中形成稳定的Polariton量子液体。它还提供了一个奇妙的光子平台，用于探索RT处的宏观量子现象，而无需复杂且昂贵的超低原子，低温恒温器或分子束外交生长真空腔。最后，钙钛矿微腔中的可调节模式在光子自旋上表现为有效的磁场，从而使RT的合成非亚伯仪轨道和拓扑物理学有能力研究。这项研究将利用纳米构造，材料合成和光谱法来研究卤化物钙钛矿材料，有望改变RT Polaritonics和量子模拟器的领域。它还将接受一项关注量子光子学的综合教育计划。将开发一门研究生课程，各种宣传途径和K-12教师研讨会，所有量子量子学领域的研究前沿，其最终目标是建立一个关于量子科学的多样化，具有全球竞争性的劳动力末日，这是该国的重要知识领域。这一奖项是NSF的法定任务，反映了由Interniquial构成的支持者，这一奖项反映了范围的范围。

项目成果

Electrically pumped polarized exciton-polaritons in a halide perovskite microcavity

卤化物钙钛矿微腔中的电泵浦偏振激子-极化子

• DOI: 10.1021/acs.nanolett.2c00906
• 发表时间: 2022
• 期刊: Nano Letters
• 影响因子: 10.8
• 作者: Tingting Wang;Zhihao Zang;Yuchen Gao;Chao Lyu;Pingfan Gu;Yige Yao;Kai Peng;Kenji Watanabe;Takashi Taniguchi;Xiaoze Liu;Yunan Gao;Wei Bao;Yu Ye
• 通讯作者: Yu Ye

Halide perovskites enable polaritonic XY spin Hamiltonian at room temperature

• DOI: 10.1038/s41563-022-01276-4
• 发表时间: 2022-06
• 期刊: Nature Materials
• 影响因子: 41.2
• 作者: Renjie Tao;K. Peng;Louis Haeberlé;Quanwei Li;D. Jin;G. Fleming;S. Kéna‐Cohen;Xiang Zhang;W. Bao