CAREER: Coherences and Nonlinear Interactions in Molecular Infrared Polaritons

职业：分子红外极化子的相干性和非线性相互作用

• 批准号: 1848215
• 负责人: Wei Xiong
• 金额: $ 52.69万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-06-01 至 2025-05-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1848215&HistoricalAwards=false
• 关键词: CAREER; Coherences; Nonlinear; Interactions; Molecular

Nontechnical Description: Interactions between material at the molecular scale and light can produce a new type of material particle called a polariton. Polaritons have unique properties that make them useful in a broad array of societally relevant applications, including medicine, chemical sensing, and homeland security, to name just a few. While the properties and applications of polaritons resulting from molecule-light interactions for some wavelengths of light have been investigated, relatively less is known about polaritons associated with light at wavelengths in the mid-infrared part of the electromagnetic spectrum. This project uses ultrafast lasers to investigate the fundamental properties of polaritons in the mid-infrared regime, and aims to understand and control interactions among polaritons. The results of this fundamental research are expected to contribute to the eventual development of new technological capabilities in chemical sensing, materials development, and visualization in the dark. Central elements of the education project include development of an online course in photonic materials research aimed at first- and second-year undergraduate students. The course is designed to help overcome many students' fears about math- and science-heavy topics, and to attract a more diverse group of students to the field of materials research. In addition, this project establishes a pipeline for engaging underrepresented minority students in summer research activities at UC San Diego, through collaboration with a faculty member at a historically black college and university (HBCU).Technical Description: Polaritons are hybrid particles resulting from strong coupling between photon and material excitations. The scientific aim of this project is to understand and control the coherences and nonlinear interactions of multiple molecular infrared polaritons, 'on a chip'. The outcome would enable mid-infrared photonic devices, such as mid-infrared optical modulators, waveguides, and lasers, that are crucial for realizing lab-on-chip mid-infrared chemical sensing for the medical and material industries. Polariton research has provided novel photonic applications in the visible and THz regimes, but not in the mid-infrared regime. Yet, mid-infrared polariton photonic devices are critical in developing lab-on-chip chemical sensing. Fundamental knowledge, such as coherent lifetime, spatial coherences, and nonlinear interactions of mid-infrared polaritons remains unclear, which prevents mid-infrared polariton photonic application developments. To advance basic knowledge of mid-infrared polaritons, the research team plans to work on two important aspects: (1) Coherence of mid-infrared polaritons is pushed beyond the natural coherence lifetime of molecular vibrations, breaking limits that currently constrain the use of mid-infrared photons for photonic circuitry and molecular sensing. (2) Coherent and coupled multiple distinguishable polaritons 'on a chip' can open the gateway for creating coherent superpositions of multiple coupled quantum states for multi-color photonic devices. In addition, the novel ultrafast mid-infrared spectroscopic imaging to be developed can be extended into other mid-infrared photonic studies.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：分子尺度和光的材料之间的相互作用可以产生一种新型的材料粒子，称为polariton。北极星具有独特的特性，使其在广泛的社会相关应用中有用，包括药物，化学感应和国土安全性，仅举几例。尽管已经研究了由分子光相互作用引起的某些光波长产生的偏振子的性能和应用，但对电磁谱的中红外部分的光线相关的极性子相对较少了解。该项目使用超快速激光器研究中红外制度中极性子的基本特性，并旨在理解和控制极化子之间的相互作用。这项基本研究的结果预计将有助于最终在黑暗中化学传感，材料开发和可视化中新技术能力的发展。该教育项目的中心要素包括开发针对一年级和二年级学生的光子材料研究的在线课程。该课程旨在帮助克服许多学生对数学和科学繁重的话题的恐惧，并吸引更多多样化的学生进入材料研究领域。此外，该项目通过与历史悠久的黑人学院和大学（HBCU）的教职员工合作，建立了一条使代表性不足的少数族裔学生参与夏季研究活动的管道。技术描述：Polaritons是由摄影和物质激发之间强烈耦合而产生的混合颗粒。该项目的科学目的是理解和控制“芯片上”多个分子红外极性子的相干和非线性相互作用。该结果将使中红外光子设备（例如中红外光学调节器，波导和激光器）能够实现医疗和材料工业的实验室中芯中的化学感测至关重要。 Polariton Research在可见的和THZ方案中提供了新的光子应用，但在中红外方案中不提供。然而，中红外极化光子设备对于开发片上实验室化学感应至关重要。基本知识，例如相干寿命，空间相干和中红外极化子的非线性相互作用，尚不清楚，这阻止了中红外极性光子光子应用的发展。为了促进中红外极化子的基本知识，研究团队计划在两个重要方面进行工作：（1）中红外极化子的连贯性超出了分子振动的自然一致性寿命，这些极限限制了当前限制中红外光子用于光子电路和分子传感的使用。 （2）芯片上的相干和耦合多个可区分的极性元可以打开网关，以创建用于多色光子设备的多个耦合量子状态的相干叠加。此外，要开发的新型超快中红外光谱成像可以扩展到其他中红外光子研究中。该奖项反映了NSF的法定任务，并被认为是通过基金会的智力优点和更广泛的影响来审查标准的评估值得支持的。

项目成果

Cavity-enabled enhancement of ultrafast intramolecular vibrational redistribution over pseudorotation

• DOI: 10.1126/science.add0276
• 发表时间: 2022-11-18
• 期刊: SCIENCE
• 影响因子: 56.9
• 作者: Chen, Teng-Teng;Du, Matthew;Xiong, Wei
• 通讯作者: Xiong, Wei

Enhanced optical nonlinearities under collective strong light-matter coupling

集体强光-物质耦合下增强的光学非线性

• DOI: 10.1103/physreva.103.063111
• 发表时间: 2021
• 期刊: Physical Review A
• 影响因子: 2.9
• 作者: Ribeiro, Raphael F.;Campos-Gonzalez-Angulo, Jorge A.;Giebink, Noel C.;Xiong, Wei;Yuen-Zhou, Joel
• 通讯作者: Yuen-Zhou, Joel

Molecular vibrational polariton: Its dynamics and potentials in novel chemistry and quantum technology

• DOI: 10.1063/5.0054896
• 发表时间: 2021-08-07
• 期刊: JOURNAL OF CHEMICAL PHYSICS
• 影响因子: 4.4
• 作者: Xiang, Bo;Xiong, Wei
• 通讯作者: Xiong, Wei

Negligible rate enhancement from reported cooperative vibrational strong coupling catalysis

报道的协同振动强耦合催化的速率提高可以忽略不计

• DOI: 10.1063/5.0077549
• 发表时间: 2021
• 期刊: The Journal of Chemical Physics
• 作者: Wiesehan, Garret D.;Xiong, Wei
• 通讯作者: Xiong, Wei

Ultrafast Coherence Delocalization in Real Space Simulated by Polaritons

• DOI: 10.1002/adom.202102237
• 发表时间: 2021-07
• 期刊: Advanced Optical Materials
• 影响因子: 9
• 作者: Bo Xiang;Zimo Yang;Yi-Zhuang You;Wei Xiong