High-Resolution Laser Spectroscopy of a Functionalized Aromatic Molecule

Pathway Towards Optical Cycling and Laser Cooling of Functionalized Arenes

Rapid and repeated photon cycling has enabled precision metrology and the development of quantum information systems using a variety of atoms and simple molecules. Extending optical cycling to structurally complex molecules would provide new capabilities in these areas, as well as in ultracold chemistry. Increased molecular complexity, however, makes realizing closed optical transitions more difficult. Building on the already established strong optical cycling of diatomic, linear triatomic, and symmetric top molecules, recent theoretical and experimental work has indicated that cycling will be…

具有光学循环中心的芳香族分子的激光光谱：锶（I）酚盐

Laser spectroscopy of aromatic molecules with optical cycling centers: strontium (I) phenoxides

本研究制备了锶（I）酚盐及其吸电子基团变体，通过光谱表征证实其光学循环闭合度符合理论预测，获得了高分辨转动激发光谱，为单分子激光冷却与量子态检测提供了候选体系。

芳香分子与碱金属及碱土金属原子的长程相互作用

Long-range interactions of aromatic molecules with alkali-metal and alkaline-earth-metal atoms

本文基于第一性原理计算了芳香分子与碱金属及碱土金属原子复合物的长程色散和诱导相互作用系数，证明包含高阶系数对重现范德华区域能量至关重要，为光谱与散射研究提供了有效解析势能。

芳香族及其他环状分子中的正电子湮没与束缚

Positron annihilation and binding in aromatic and other ring molecules

本文利用基于阱的正电子束测量了芳香族和杂环分子的湮没谱，得出正电子-分子束缚能，并验证了考虑电子-正电子关联的\textit{ab initio}多体理论的预测，揭示了偶极矩与$π$键对束缚态分布的竞争作用。

Functionalizing Aromatic Compounds with Optical Cycling Centers

Molecular design principles provide guidelines for augmenting a molecule with a smaller group of atoms to realize a desired property or function. We demonstrate that these concepts can be used to create an optical cycling center that can be attached to a number of aromatic ligands, allowing the scattering of many photons from the resulting molecules without changing the molecular vibrational states. We provide further design principles that indicate the ability to expand this work. This represents a significant step towards a quantum functional group, which may serve as a generic qubit moiety …