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arXiv 1804.04752physics.atom-ph
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从两个原子库中构建一个分子

Building one molecule from a reservoir of two atoms

L. R. Liu, J. D. Hood, Y. Yu, J. T. Zhang, N. R. Hutzler, T. Rosenband, K. -K. Ni

摘要:

化学反应通常通过反应物之间的随机相遇进行。超越这种范式,我们将两个原子结合成一个单一的,受控的反应。该实验装置将两个单独的激光冷却原子(一个钠和一个铯)捕获在单独的光镊中,然后将它们合并到一个光偶极阱中。随后,光缔合形成激发态NaCs分子。发现以前看不见的共振附近的分子解离阈值和碰撞率的测量是通过紧密捕获的超冷原子样品。随着激光冷却和捕获能力扩展到更多的元素,该技术将能够在隔离环境中研究更多样化,最终更复杂的分子,以及合成量子位的设计分子。

英文摘要:

Chemical reactions typically proceed via stochastic encounters between reactants. Going beyond this paradigm, we combine exactly two atoms into a single, controlled reaction. The experimental apparatus traps two individual laser-cooled atoms (one sodium and one cesium) in separate optical tweezers and then merges them into one optical dipole trap. Subsequently, photoassociation forms an excited-state NaCs molecule. The discovery of previously unseen resonances near the molecular dissociation threshold and measurement of collision rates are enabled by the tightly trapped ultracold sample of atoms. As laser-cooling and trapping capabilities are extended to more elements, the technique will enable the study of more diverse, and eventually more complex, molecules in an isolated environment, as well as synthesis of designer molecules for qubits.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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