CAREER: Rules for Polaritonic Chemistry

在化学系化学结构、动力学和机制(CSDM-A)计划的支持下，韦恩州立大学的Aaron Rury将使用泵浦-探测光谱学来了解在强光-物质耦合条件下，限制在小腔中的光的量子粒子如何在分子和材料之间携带化学信息。由于传统上光与周围介质的耦合很弱，鲁里博士和他的研究小组将制造小的光子陷阱，形成被称为腔极化子的混合光物质状态，可以使用稳态和时间分辨电磁光谱仪进行可靠的研究。通过测量样品吸收和发射的位置，应该可以提出管理极化特性的规则，以促进化学和材料设计原则。来自不同背景的研究生和本科生都将参与这些量子科学研究活动。超快泵浦-探测、相干振动和稳态光谱技术将被用来确定腔多极化子的离域性质如何调节材料和有机生色团之间的自旋轨道耦合，控制混合轻质态的核结构，并使研究人员能够在接近实现量子光子材料设计的末尾控制极化子态寿命。与光腔模式强耦合的分子生色团或半导体薄膜将被用来在数百纳米的分子之间产生类似键的相互作用。一旦更好地理解了支配极化子化学的规则，这些规则应该有助于在混合多极化子系统中建立结构-性质关系。在这些空腔中诱导新化学的能力可能为光化学和量子信息科学的分子和材料设计提供一种新的方法。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

With support from the Chemical Structure, Dynamics, and Mechanisms-A (CSDM-A) Program in the Division of Chemistry, Aaron Rury of Wayne State University will use pump-probe spectroscopy to understand how quantum particles of light confined in small cavities carry chemical information between molecules and materials under strong light-matter coupling conditions. Because light traditionally couples to its surrounding medium weakly, Dr. Rury and his research group will fabricate small photon traps to form hybrid light matter-states called cavity polaritons that can be reliably studied using steady-state and time-resolved electromagnetic spectroscopies. By measuring where the samples absorb and emit, it should be possible to put forward rules governing polaritonic properties that advance chemical and materials design principles. Both graduate and undergraduate students from diverse backgrounds will be involved in these quantum science research activities. Ultrafast pump-probe, coherent vibrational, and steady-state spectroscopic techniques will be employed to determine how the delocalized nature of cavity multipolaritons mediates spin orbit coupling between materials and organic chromophores, controls the nuclear structures of hybrid light-matter states, and enables researchers to control polariton state lifetimes toward the end of achieving quantum photonic materials design. Thin films of molecular chromophores or semiconductors that are strongly coupled to optical cavity modes will be used to create bonding-like interactions between molecules across hundreds of nanometers. Once rules that govern polaritonic chemistry are better understood, these rules should help to establish structure-property relationships in hybrid mutlipolaritonic systems. The ability to induce new chemistry in these cavities could provide for a new approach to molecular and materials design for photochemistry and quantum information science.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.