Toward Ultracold Organic Chemistry: Prospects of Laser Cooling Large Organic Molecules.

Toward Ultracold Organic Chemistry: Prospects of Laser Cooling Large Organic Molecules.
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迈向超冷有机化学:激光冷却有机大分子的前景。

DOI:
10.26434/chemrxiv.12567995
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发表时间:
2020
期刊:
The journal of physical chemistry letters
影响因子:
--
通讯作者:
A. Krylov
A. Krylov
中科院分区:
--
文献类型:
--
作者:
M. Ivanov;F. Bangerter;P. Wójcik;A. Krylov

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超冷有机化学使研究反应动力学和机制的量子制度。获得超冷分子取决于通过准闭合循环转变有效散射多个光子的能力。由于多原子分子复杂的电子结构,其光学循环具有挑战性。使用方程的运动耦合簇计算,我们表明,碱土金属连接到各种芳香族配体(如苯,苯酚,苯,和吡咯烷)提供了几乎封闭的循环过渡,只有几个额外的再泵浦激光。我们还表明,芳香族配体,如苯可以容纳多种几何排列的多个循环中心,在量子信息科学,精密测量和超冷化学开辟了新的途径。
Ultracold organic chemistry enables studies of reaction dynamics and mechanisms in the quantum regime. Access to ultracold molecules hinges on the ability to efficiently scatter multiple photons via quasi-closed cycling transitions. Optical cycling in polyatomic molecules is challenging due to their complex electronic structure. Using equation-of-motion coupled-cluster calculations, we demonstrate that an alkaline earth metal attached to various aromatic ligands (such as benzene, phenol, cyclopentadienyl, and pyrrolide) offers nearly closed cycling transitions with only a few additional repump lasers. We also show that aromatic ligands such as benzene can accommodate multiple cycling centers in various geometrical arrangements, opening new avenues in quantum information science, precision measurements, and ultracold chemistry.
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