Ultracold Rydberg Atoms and Molecules

超冷里德伯原子和分子

• 批准号: 0457126
• 负责人: Phillip Gould
• 金额: --
• 依托单位: University of Connecticut
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-06-01 至 2010-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0457126&HistoricalAwards=false
• 关键词: Ultracold; Rydberg; Atoms; Molecules

This award is a renewal of one portion of a group grant that involved several research projects involving ultracold molecules, photoassociative spectroscopy, and ultracold Rydberg atoms and plasmas. This funding will continue the ultracold Rydberg project. Ultracold Rydberg gases and plasmas can be strongly-coupled systems. This results in novel dynamical behavior, including interconversion of ultracold plasmas and cold Rydberg gases, that forms one focus of the research. The PI will also focus on the physics of the Rydberg-Rydberg interactions themselves, especially studies of novel molecular interactions such as pairwise photoassociation, ultra-long-range "macrodimers," and weakly bound "trilobite" molecules comprising one Rydberg atom and one ground-state atom. Nonlinear effects can play an unusually prominent role in cold Rydberg gases, because of their high density combined with their extreme sensitivity to external fields. The PI will undertake studies of superradiance and superfluorescence, building on preliminary results that appear to show strong density-dependent effects. The PI will also undertake studies of Rydberg states of molecules, as opposed to ultra-long-range molecules comprised of Rydberg atoms. On the broader impacts, components of the program that will serve to integrate this research with graduate and undergraduate education include regular group meetings, mentoring, workshops, participation in the Research Experience for Undergraduates (REU) program, participation in the European Community Research Training Network (ECRTN) on Cold Molecules, and numerous collaborations. In these components the investigators will continue to seek participation of underrepresented groups.

该奖项是一个小组拨款的一部分的更新，该小组拨款涉及几个研究项目，涉及超冷分子、光结合光谱、超冷里德伯原子和等离子体。这笔资金将继续超低温里德伯格项目。超冷里德伯气体和等离子体可以是强耦合系统。这导致了新的动力学行为，包括超冷等离子体和冷里德伯气体的相互转换，这是研究的一个重点。PI还将关注里德堡-里德堡相互作用本身的物理学，特别是对新型分子相互作用的研究，如成对光结合、超远程“大二聚体”和由一个里德堡原子和一个基态原子组成的弱结合“三叶虫”分子。非线性效应可以在冷里德伯气体中发挥异常突出的作用，因为它们的高密度加上它们对外部场的极端敏感性。PI将在初步结果的基础上进行超辐射和超荧光的研究，这些初步结果似乎显示出强烈的密度依赖效应。PI还将研究分子的里德堡态，而不是由里德堡原子组成的超远程分子。就更广泛的影响而言，该计划的组成部分将有助于将该研究与研究生和本科教育相结合，包括定期小组会议、指导、研讨会、参与本科生研究经验（REU）计划、参与欧洲共同体冷分子研究培训网络（ECRTN）以及众多合作。在这些组成部分中，调查人员将继续争取代表性不足的群体的参与。