Studies Involving Atoms in High Rydberg States

涉及高里德堡态原子的研究

• 批准号: 0964819
• 负责人: F. Barry Dunning
• 金额: $ 60.41万
• 依托单位: William Marsh Rice University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-07-01 至 2014-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0964819&HistoricalAwards=false
• 关键词: Studies; Involving; Atoms; Rydberg; States

The control and manipulation of the electronic states of atoms will be explored using as a laboratory Rydberg atoms in which one electron is excited to a preselected very-high-lying initial state. The targeted final states will be created using carefully-tailored sequences of short electric field pulses. Localized electronic states will be engineered whose motion mirrors that of a classical electron moving in both quasi-one-dimensional and near-circular orbits. The response of such atoms to periodic trains of pulses will be studied to explore their dynamics, the level of control that can be achieved by varying the driving field, the transition from classical to quantum chaos, and the application of the tools of classical non-linear dynamics to atomic systems. Techniques to store/retrieve information in atoms will be evaluated. The role of collisions or electrical noise in destroying such information will be also examined. Rydberg atom-surface interactions will be investigated under controlled conditions to understand how atoms evolve as they approach a surface and to examine the charge transfer processes that occur. Rydberg atom interactions with nanoscale particles deposited on the surface will also be studied. Rydberg atoms promise valuable new insights into the nano-/meso-scale world and systems such as quantum wells and quantum dots that play a prominent role in emerging technologies related to quantum computing, quantum information processing, and information storage/retrieval. The work will furnish new understanding of physics in the ultra-fast ultra-intense regime and speak to the engineering of low-lying atomic (and molecular) states at the sub-nanoscale using the new generation of attosecond pulse lasers. Rydberg atoms form a bridge between the quantum and classical worlds permitting exploration of the whole quantum-to-classical crossover. The Rydberg atom-surface studies will furnish new insights into charge transfer processes at surfaces which form the basis of many practical spectroscopies used to characterize surfaces and of many surface chemical reactions. The research will contribute to the training of the scientific workforce by providing students with a solid foundation in many areas of physics together with a diverse array of experimental skills in many technologically-relevant areas ranging from high-vacuum systems and lasers to high-speed electronics and computerized data acquisition and control systems.

原子的电子态的控制和操纵将被探索作为一个实验室里德伯原子，其中一个电子被激发到一个预先选择的非常高的初始状态。目标的最终状态将通过精心定制的短电场脉冲序列来创建。局域电子态将被设计，其运动反映了在准一维和近圆轨道上运动的经典电子。将研究这些原子对周期脉冲序列的响应，以探索它们的动力学，通过改变驱动场可以实现的控制水平，从经典混沌到量子混沌的转变，以及经典非线性动力学工具在原子系统中的应用。将评估在原子中存储/检索信息的技术。还将研究碰撞或电噪声在破坏这些信息中的作用。里德伯原子-表面相互作用将在受控条件下进行研究，以了解原子在接近表面时如何演变，并检查发生的电荷转移过程。里德伯原子与沉积在表面的纳米级粒子的相互作用也将被研究。里德伯原子有望对纳米/中尺度世界和系统（如量子阱和量子点）提供有价值的新见解，这些系统在与量子计算、量子信息处理和信息存储/检索相关的新兴技术中发挥着重要作用。这项工作将提供对超快超强状态下物理学的新理解，并使用新一代阿秒脉冲激光器在亚纳米尺度上对低洼原子（和分子）状态进行工程研究。里德伯原子在量子世界和经典世界之间形成了一座桥梁，允许探索整个量子与经典的交叉。里德伯原子表面研究将为表面上的电荷转移过程提供新的见解，这些过程构成了许多用于表征表面和许多表面化学反应的实用光谱学的基础。这项研究将有助于培养科学人才，为学生提供许多物理领域的坚实基础，以及在许多技术相关领域（从高真空系统和激光到高速电子和计算机数据采集和控制系统）的各种实验技能。