Studies in Spectroscopy and Quantum Electronics

光谱学和量子电子学研究

• 批准号: 9320142
• 负责人: Steven Chu
• 金额: $ 186万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-06-15 至 2000-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9320142&HistoricalAwards=false
• 关键词: Studies; Spectroscopy; Quantum; Electronics

This proposal is for "Studies in Spectroscopy and Quantum Electronics" and continues a productive and exciting program in laser cooling and trapping. The studies of the cooling and trapping process are aimed at extending the technique of Raman cooling combined with dipole trapping to reach sub- microkelvin temperatures at high densities. The trapped atoms will be use to study atom/atom collisions in the sub micro-Kelvin temperature range and atom/surface collisions with atoms in the sub nano-kelvin temperature range. The cooled and trapped atoms are also being used to study atom interferometry for precision time measurements and for the construction of an atom interferometer for an ultra- sensitive gravimeter. Finally, the techniques for manipulating atoms are being extended to the manipulation of biological molecules to study the motion of enzymes and to measure forces on biological molecules.

该提案针对“光谱学和量子电子学研究”，并继续开展激光冷却和捕获方面富有成效且令人兴奋的计划。 冷却和捕获过程的研究旨在扩展拉曼冷却与偶极子捕获相结合的技术，以在高密度下达到亚微开尔文温度。 捕获的原子将用于研究亚微开尔文温度范围内的原子/原子碰撞以及亚纳米开尔文温度范围内原子/表面与原子的碰撞。 冷却和捕获的原子还被用于研究原子干涉测量，以实现精确时间测量以及用于超灵敏重力计的原子干涉仪的构造。 最后，操纵原子的技术正在扩展到生物分子的操纵，以研究酶的运动并测量生物分子上的力。