Strongly Correlated Quantum Gas with Single Site Addressability

具有单站点可寻址性的强相关量子气体

• 批准号: 0653509
• 负责人: Markus Greiner
• 金额: $ 40.8万
• 依托单位: Harvard University
• 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: 2007-06-15 至 2010-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0653509&HistoricalAwards=false
• 关键词: Strongly; Correlated; Quantum; Gas; Single

Amazing progress has recently been made in the field of ultracold quantum gases. Mott insulator and maximally entangled quantum states have been realized in optical lattices, and condensation of pairs of fermionic atoms in the BCS-BEC crossover has been observed. With these systems it now becomes possible to study fundamental questions of modern solid state and quantum information physics with atomic physics experiments. Currently, the most significant limitation for many experiments on strongly correlated quantum gases is the lack of high-resolution optical access and single lattice site addressability. The goal for this project is to overcome current limitations and to study new physics with a novel experimental system, in which a strongly correlated quantum gas in an optical lattice can be probed and manipulated with unprecedented optical resolution and single lattice site addressability. Two-dimensional optical lattice potentials will be superimposed to an optical surface trap, resulting in sub micron lattices with single lattice site addressability. This new system will be used to realize and study complex, strongly correlated quantum gases with unprecedented control and accessibility. This work is expected to have broad impact on research, education and technology. The new experiment will be an important step in the world-wide quest for the experimental realization of novel strongly correlated quantum states of matter. Parallel to the research, the PI is developing a new advanced optics course covering quantum electronics and modern optics. Graduate and undergraduate students will participate by developing lecture demonstrations for this course based on new insights they got while developing complex optical systems for the experiment. Experiments studying strongly correlated quantum states with optical addressability should present unique opportunities to answer outstanding questions in modern condensed matter and quantum physics. A better understanding of this fundamental physics can lead to quantum information applications and to new materials, such as superconductors with higher critical temperatures.

最近在超冷量子气体领域取得了惊人的进展。 在光学晶格中实现了Mott绝缘体和最大纠缠量子态，观察到了BCS-BEC交叉中费米原子对的凝聚。 有了这些系统，现在可以用原子物理实验研究现代固态和量子信息物理的基本问题。 目前，许多强关联量子气体实验的最大限制是缺乏高分辨率的光学访问和单晶格位置寻址能力。 该项目的目标是克服当前的限制，并利用一种新的实验系统研究新的物理学，在这种实验系统中，可以以前所未有的光学分辨率和单晶格位置寻址能力探测和操纵光学晶格中的强相关量子气体。 二维光学晶格势将叠加到光学表面陷阱，导致具有单晶格位置寻址能力的亚微米晶格。 这个新系统将用于实现和研究复杂的，强相关的量子气体，具有前所未有的控制和可访问性。 预计这项工作将对研究、教育和技术产生广泛影响。 新的实验将是世界范围内寻求实验实现新的强相关物质量子态的重要一步。 在研究的同时，PI正在开发一门新的高级光学课程，涵盖量子电子学和现代光学。 研究生和本科生将参与开发讲座演示本课程的基础上，他们得到的新见解，而开发复杂的光学系统的实验。 研究具有光学可寻址性的强关联量子态的实验应该为回答现代凝聚态和量子物理学中的突出问题提供独特的机会。 更好地理解这一基本物理学可以导致量子信息应用和新材料，如具有更高临界温度的超导体。