Efficient detection of cold polar molecules via Rydberg atoms

通过里德伯原子有效检测冷极性分子

• 批准号: 421986931
• 负责人: Dr. Martin Zeppenfeld
• 金额: --
• 依托单位: Abteilung Quantendynamik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/421986931?language=en
• 关键词: Efficient; detection; cold; polar; molecules

Experiments on cold and ultracold molecules are at the frontier of research in quantum science, promising, e.g. new approaches for quantum many-body physics and novel architectures for quantum information processing. However, the lack of efficient detection schemes for many molecule species substantially impedes progress. In this project, the detection of cold polar molecules via ultracold Rydberg atoms using Förster Resonant Energy Transfer will be experimentally demonstrated. Key features of the detection include the applicability to basically any polar molecule species, a high detection efficiency, state selectivity, and the ability to detect molecules nondestructively. These advantages will provide a major boost to the field of cold/ultracold molecules. The project will also make groundbreaking contributions beyond detection of molecules. First, collision studies between cold molecules and Rydberg atoms will be performed, with fundamentally different collision properties expected compared to higher-energy collisions performed previously. Second, a new approach to perform precision molecular spectroscopy will be demonstrated, using Rydberg atoms instead of photons. Third, the work represents a first demonstration of a quantum hybrid system combining Rydberg atoms and polar molecules, which will allow the extreme controllability of ultracold atoms to be harnessed for fundamental investigations with molecules.

冷和超冷分子的实验是量子科学研究的前沿，具有广阔的前景，例如量子多体物理的新方法和量子信息处理的新体系结构。然而，缺乏对许多分子物种的有效检测方案在很大程度上阻碍了进展。在这个项目中，我们将通过实验演示利用Förster共振能量转移通过超冷里德堡原子探测冷极性分子。该检测的主要特点包括基本上适用于任何极性分子物种，高检测效率，状态选择性，以及非破坏性检测分子的能力。这些优势将为冷/超冷分子领域提供重大推动。该项目还将做出突破性的贡献，超越分子检测。首先，将进行冷分子与里德堡原子之间的碰撞研究，预计与以前进行的高能碰撞相比，碰撞性质将完全不同。其次，将展示一种使用里德堡原子代替光子进行精确分子光谱分析的新方法。第三，这项工作是里德堡原子和极性分子结合的量子混合系统的第一次展示，这将允许利用超冷原子的极端可控性来进行分子的基础研究。