Ultracold Polar Molecules

超冷极性分子

基本信息

批准号：
0705204
负责人：
Nicholas Bigelow
金额：
$ 47万
依托单位：
University of Rochester
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2007
资助国家：
美国
起止时间：
2007-07-01 至 2012-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0705204&HistoricalAwards=false
关键词：
Ultracold Polar Molecules

项目摘要

This experimental research project focuses on of creating and exploring dense ultracold gasses of polar molecules. Exploration of dipolar quantum gasses is of intense current interest because of interest in how anisotropic potentials affect collective phenomena. The NaCs molecule to be studied in this project has strong dipole-dipole forces that will exhibit novel behavior. The project will is to extend prior work in creating NaCs polar molecules which are in the electronic ground state but in rovibrationally excited states. The goal of this project is to use a coherent control technique (Adiabatic Passage by Light Induced Potentials) to produce molecules in the rovibrational ground state from a gas of ultracold atoms. In addition methods to trap these molecules in an electric potential that has a rotating saddle point will be developed. A broader impact of this work lies in the ability of experiments with dipolar gasses to investigate quantum phase transitions which are normally associated with condensed matter systems. Cold polar molecules also have a potential to be used as quantum bits for information processing. As a further and significant broader impact, the project has a significant educational component; undergraduate and graduate students will actively contribute to this research. The project is an ideal training ground for the next generation of scientists and engineers. Students trained in these fields are highly sought after in academic, government and industrial jobs and play a key role in the US scientific workforce.

该实验研究项目的重点是创造和探索极性分子的致密超冷气体。由于对各向异性势如何影响集体现象的兴趣，对偶极量子气体的探索目前引起了人们的强烈兴趣。本项目要研究的 NaCs 分子具有很强的偶极-偶极力，将表现出新颖的行为。该项目将扩展先前创建 NaCs 极性分子的工作，这些分子处于电子基态但处于振动激发态。该项目的目标是使用相干控制技术（光诱导势绝热通道）从超冷原子气体中产生振动基态分子。此外，还将开发将这些分子捕获在具有旋转鞍点的电势中的方法。这项工作更广泛的影响在于能够用偶极气体进行实验来研究通常与凝聚态物质系统相关的量子相变。冷极性分子也有可能用作信息处理的量子位。作为更进一步、更广泛的影响，该项目具有重要的教育成分；本科生和研究生将积极为这项研究做出贡献。该项目是下一代科学家和工程师的理想训练场。在这些领域接受过培训的学生在学术、政府和工业工作中备受追捧，并在美国科学劳动力中发挥着关键作用。