Interactions in Cold Rydberg Gases

冷里德伯气体中的相互作用

• 批准号: 0855324
• 负责人: James Shaffer
• 金额: $ 39.6万
• 依托单位: University of Oklahoma Norman Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-06-01 至 2013-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0855324&HistoricalAwards=false
• 关键词: Interactions; Cold; Rydberg; Gases

The interactions between cold Rydberg atoms (T1mK) are being studied experimentally using a unique collision imaging spectrometer and nonlinear optical techniques. The study of coherent interactions between Rydberg atoms is important for quantum computing, many-body physics, nonlinear optics at the few photon limit, and other phenomena that rely on strong light-light interactions. The results of these experiments will be compared to theory done by our research group. The research program consists of 3 principal experiments. First, the coherent excitation of macrodimers, molecules with internuclear separations greater than 1 micron, is being investigated. Rydberg atom macrodimers have unique properties that can be used to probe correlations in quantum gases over a broad range of macroscopic distances and energy scales. Second, anisotropic dipole-dipole interactions between Rydberg atoms in a polarizing electric field will be studied experimentally and theoretically. This work will support the other experiments in the proposal as well as other work in cold Rydberg gases including that on quantum computation, ultracold plasmas, collisions, Rydberg matter, and many-body phenomena. Finally, coherent interactions and excitation of cold Rydberg atoms are being investigated using nonlinear optical techniques. Energy degenerate 4-wave mixing in the time and frequency domains can probe the coherence of Rydberg atom interactions in a cold Rydberg gas.The project supports 2 graduate students. The research program also enables undergraduate students who participate through the senior capstone and the NSF-REU programs at OU. Our research group has been successful with undergraduate research participation as demonstrated by the completion of 10 senior capstone projects and 11 NSF-REU projects over the last 7 years. To help recruit new students to the project and teach the students working on the project, the PI plans to include topics relevant to this research in the summer course in advanced research topics that he has taught the last 5 summers on a voluntary basis to faculty, graduate students and summer undergraduate research students. The work is also be used to expand the SEES, Science Zone (K-12), and Research Experience for Teachers (RET) outreach programs associated with our departments Materials Research Science and Engineering Center (MRSEC).

使用独特的碰撞成像仪和非线性光学技术研究了冷rydberg原子（T1MK）之间的相互作用。 Rydberg原子之间相干相互作用的研究对于量子计算，多体物理学，在几个光子极限处的非线性光学以及其他依赖强光相互作用的现象很重要。这些实验的结果将与我们的研究小组所做的理论进行比较。研究计划包括3个主要实验。首先，正在研究大于1微米的巨二聚体的相干激发，分子的分子。 rydberg原子宏观二聚体具有独特的特性，可用于在巨大的宏观距离和能量尺度上探测量子气体中的相关性。 其次，将通过实验和理论研究偏振电场中Rydberg原子之间的各向异性偶极 - 偶极相互作用。这项工作将支持该提案中的其他实验以及冷rydberg气体中的其他工作，包括量子计算，超低等离子体，碰撞，瑞德伯格物质和多体现象。最后，正在使用非线性光学技术研究冷rydberg原子的相干相互作用和激发。在时间和频域中的能量退化4波混合可以探测冷rydberg气体中Rydberg Atom相互作用的相干性。该项目支持2名研究生。该研究计划还可以使本科生通过OU的高级顶峰和NSF-REU计划参加。在过去的7年中，我们的研究小组在本科研究的参与中取得了成功。为了帮助招募新学生参加该项目，并教授从事该项目的学生，PI计划将与这项研究有关的主题包括在夏季课程中与高级研究主题有关的主题，他在自愿的基础上教了最后5个夏季，以教职员工，研究生和夏季的本科生研究生。这项工作还用于扩展与我们部门材料研究科学与工程中心（MRSEC）相关的教师（RET）外展计划的See，科学区（K-12）和研究经验。