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CAREER: Fundamental Physics Through Precision Measurements of Trapped Charged Particles

职业：通过精确测量捕获的带电粒子进行基础物理学

基本信息

批准号：
1255170
负责人：
David Hanneke
金额：
$ 60万
依托单位：
Amherst College
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2013
资助国家：
美国
起止时间：
2013-06-01 至 2019-05-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1255170&HistoricalAwards=false
关键词：
CAREER Fundamental Physics Through Precision

项目摘要

This CAREER award will enable tests of fundamental physics through precise measurements of the properties of trapped charged particles. Many atoms, molecules, and sub-atomic particles have attributes that are of interest but impractical to measure using a particle in isolation. Often the isolated particle lacks suitable means for cooling or for preparing or detecting its quantum state. Techniques developed for trapped-ion quantum information processing have recently enabled the transfer of the practical tasks to a co-trapped atomic ion, using the interaction between two charged particles as an information bus and opening for investigation a wide range of charged particles. Experiments enabled by this award will focus on diatomic molecular ions, including the cooling of molecular rotation, the preparation of known internal states, and the precise determination of the energy differences between states. These measurements will be applied to searches for time-variation of the electron-to-proton mass ratio. While no known laws of physics allow for a change in this ratio, variation arises naturally in many theories seeking to merge quantum mechanics with gravity.This work will integrate research and education through the mentoring of undergraduates at the forefront of research while developing an innovative physics curriculum at a liberal arts college. Undergraduate students will be introduced to active questions in the field and the experimental techniques being used to answer them. Many skills in experimental physics are transferable to a wide array of future endeavors. In addition, this award will allow for the development, implementation, and dissemination of a revised physics curriculum at Amherst College.

该奖项将通过精确测量被捕获带电粒子的特性，对基础物理学进行测试。许多原子、分子和亚原子粒子具有令人感兴趣的特性，但用单个粒子单独测量这些特性是不切实际的。通常，孤立的粒子缺乏合适的冷却或制备或检测其量子态的方法。利用两个带电粒子之间的相互作用作为信息总线，为广泛的带电粒子的研究打开了大门，用于捕获离子量子信息处理的技术最近使实际任务转移到共同捕获的原子离子上。该奖项支持的实验将集中在双原子分子离子上，包括分子旋转的冷却，已知内部状态的制备，以及状态之间能量差的精确测定。这些测量将应用于寻找电子与质子质量比的时间变化。虽然没有已知的物理定律允许这个比例发生变化，但在许多试图将量子力学与引力结合起来的理论中，变化是自然产生的。这项工作将通过指导处于研究前沿的本科生，同时在文理学院开发创新的物理课程，将研究和教育结合起来。将向本科生介绍该领域的活跃问题以及用于回答这些问题的实验技术。实验物理中的许多技能都可以应用到未来的工作中。此外，该奖项将允许在阿默斯特学院开发，实施和传播修订后的物理课程。