Quantum Reflection of Ultra-Cold Atoms from Surfaces

表面超冷原子的量子反射

• 批准号: 9876598
• 负责人: Mark Raizen
• 金额: $ 38.2万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-06-01 至 2003-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9876598&HistoricalAwards=false
• 关键词: Quantum; Reflection; Ultra; Cold; Atoms

9876598RaizenThis research program focuses on the study of reflection of atoms from surfaces at very small incident kinetic energies. The work will rely on recent advances in cooling and trapping of neutral atoms to create an ultracold atomic beam. The atoms will be launched at a controlled velocity toward a surface and the reflection probability will be measured. As a first test of the system, quantum reflection from an evanescent wave mirror will be measured. In the next stage of research, quantum reflection will be studied in an atomic interferometer. Reflection from a variety of surfaces will then be studied without the evanescent wave in order to probe fundamental atom-surface interactions.

9876598Raizen该研究项目重点研究原子在非常小的入射动能下从表面反射的情况。 这项工作将依靠中性原子冷却和捕获方面的最新进展来产生超冷原子束。 原子将以受控速度射向表面，并测量反射概率。 作为系统的第一次测试，将测量倏逝波镜的量子反射。 在下一阶段的研究中，将在原子干涉仪中研究量子反射。 然后将在没有倏逝波的情况下研究来自各种表面的反射，以探测基本的原子-表面相互作用。