论文标题
分子不对称和光循环：激光冷却不对称的顶部分子
Molecular Asymmetry and Optical Cycling: Laser Cooling Asymmetric Top Molecules
论文作者
论文摘要
我们提出了一个实用的路线图，以实现不对称顶部分子（ATM）的光循环和激光冷却。我们的理论分析描述了与双原子和对称非线性分子相比，分子对称性的还原性如何在光子散射中起作用。我们提出了规避这些系统快速光子循环的限制的方法。我们计算了各种不对称顶部分子的振动分支比率，发现在一系列广泛的分子中的许多物种都可以通过可管理数量的激光器有效冷却。我们还描述了在ATM中实现旋转闭合光周期的方法。尽管结构上的复杂性很高，但使用用于线性分子的当前技术的扩展可以使激光冷却有效。激光冷却ATM的潜在科学影响在受控化学，量子模拟中跨度跨度，并在标准模型之外搜索物理学。
We present a practical roadmap to achieve optical cycling and laser cooling of asymmetric top molecules (ATMs). Our theoretical analysis describes how reduced molecular symmetry, as compared to diatomic and symmetric non-linear molecules, plays a role in photon scattering. We present methods to circumvent limitations on rapid photon cycling in these systems. We calculate vibrational branching ratios for a diverse set of asymmetric top molecules and find that many species within a broad class of molecules can be effectively cooled with a manageable number of lasers. We also describe methods to achieve rotationally closed optical cycles in ATMs. Despite significant structural complexity, laser cooling can be made effective using extensions of the current techniques used for linear molecules. Potential scientific impacts of laser-cooled ATMs span frontiers in controlled chemistry, quantum simulation, and searches for physics beyond the Standard Model.
