Ultracold Atoms as a Probe of Novel Atom-Surface Interactions

超冷原子作为新型原子-表面相互作用的探针

• 批准号: 0855412
• 负责人: Daniel Steck
• 金额: $ 41万
• 依托单位: University of Oregon Eugene
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-15 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0855412&HistoricalAwards=false
• 关键词: Ultracold; Atoms; Probe; Novel; Atom

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).This research project aims to achieve a better understanding of the Casimir-Polder potential--the force between an electrically neutral atom and a surface due solely to fluctuations of the quantum- mechanical vacuum--in regimes of novel geometries and material properties. Precision measurements will be carried out with laser- cooled strontium atoms confined in lattices of laser light. The apparatus is designed to load atoms into a single lattice site, far away from the surface, and then move them to within a controlled distance of it. An important component of this research plan is to leverage the extensive technology developed for next-generation, ultrahigh precision, optical atomic clocks using strontium atoms. The main goals during the project period are: to construct a new laser-cooling apparatus to demonstrate these new techniques; to then explore novel effects on the atom-surface force related to the orientation of the atom with respect to the surface; to probe effects due to departures from the well-studied planar surface geometry; and to explore modifications to the atom-surface force due to changes in the atomic or material dispersion properties.This research will contribute significantly to fundamental knowledge in atomic physics, material science, and quantum electrodynamics. The understanding of atom-surface interactions will assist the development of miniaturized, practical quantum technologies, such as atom-chip interferometers, sensors, and quantum-information processors. This is particularly the case inasmuch as understanding modifications to atom-surface interactions by changing material or geometric properties of surfaces enables the engineering of atom-surface potentials. Education is also an integral component of this project. This research will provide dissertation topics for at least two graduate students, and will also involve undergraduates in an exciting and interdisciplinary research area. This research will also directly impact coursework at the University of Oregon. In lecture courses at all levels, the Casimir-Polder effect and the atom- optical techniques involved in its measurement provide relevance for the course subject matter and stimulate student interest. The UO optics teaching laboratory will also benefit from "technology transfer" from the experiment, in that modular, easily reproduced equipment designed for use in the apparatus will be constructed by teaching-laboratory students to build up new, advanced laboratory modules.

该奖项是根据2009年《美国复苏和再投资法案》(公法111-5)资助的。该研究项目旨在更好地理解Casimir-Polder势--在新的几何结构和材料性质的范围内，电中性原子与表面之间的力完全是由量子力学真空的波动引起的。精密测量将利用激光冷却的锶原子进行，这些原子被限制在激光晶格中。该装置被设计成将原子加载到远离表面的单一晶格位置，然后将它们移动到距离表面受控的范围内。这项研究计划的一个重要组成部分是利用为使用锶原子的下一代超高精度光学原子钟开发的广泛技术。项目期间的主要目标是：建造一台新的激光冷却装置来演示这些新技术；然后探索与原子相对于表面的取向有关的对原子表面力的新影响；探测由于偏离充分研究的平面表面几何结构而产生的效应；以及探索由于原子或材料色散性质的变化而对原子表面力的修改。这项研究将对原子物理、材料科学和量子电动力学的基础知识做出重大贡献。对原子-表面相互作用的了解将有助于发展小型化、实用的量子技术，如原子-芯片干涉仪、传感器和量子信息处理器。情况尤其如此，因为通过改变表面的材料或几何性质来理解对原子-表面相互作用的修改使原子-表面势的工程得以实现。教育也是该项目不可或缺的组成部分。这项研究将为至少两名研究生提供学位论文主题，并将包括本科生参与一个令人兴奋的跨学科研究领域。这项研究还将直接影响俄勒冈大学的课程工作。在所有级别的讲座课程中，卡西米尔-波尔德效应及其测量所涉及的原子光学技术提供了与课程主题相关的内容，并激发了学生的兴趣。UO光学教学实验室也将受益于该实验的“技术转让”，因为用于该仪器的模块化、易于复制的设备将由教学实验室的学生建造，以建立新的、先进的实验室模块。