Physics and Applications of high-density spin-polarized systems with long coherence time

长相干时间高密度自旋偏振系统的物理与应用

• 批准号: 0855552
• 负责人: Dmitry Budker
• 金额: $ 53.4万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-07-15 至 2012-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0855552&HistoricalAwards=false
• 关键词: Physics; Applications; density; spin; polarized

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).The project investigates novel materials, paramagnetic atoms ablated into a cryogenic buffer gas and nitrogen-vacancy (NV) color centers in diamond crystals, that open a possibility for creating magnetic-field sensors with unprecedented combinations of parameters: ultra-high sensitivity, compact size, a broad range of operating temperatures, etc. The applications of these devices range from the most fundamental physics, for example, the search for the reasons for the matter-antimatter asymmetry of the Universe, to magnetic microscopy of biologically relevant objects and nuclear-magnetic-resonance detection on lab-on-a-chip microfluidic devices. The intellectual merit of the proposed work consists of advancement of the current understanding of the mechanisms of spin-decoherence of paramagnetic atoms in a dense buffer gas and NV centers in diamond in a wide temperature range, as well as the development of techniques for obtaining systems with ultra-long electron spin-coherence lifetimes. This development will have a broad impact on the optics and atomic physics community. The project draws from the areas of atomic, solid-state optical, and low-temperature physics, cross-fertilizing these disciplines.The other part of the broader impact of this experiment is through training graduate and undergraduate students. The project allows for a unique combination of a broad range of physics skills to be taught to students: cryogenics, spectroscopy and optical pumping, atomic theory, solid-state optics, non-linear optics, lasers, electronics, vacuum techniques, etc. In addition to expanding modern cryogenic and optical physics facilities at Berkeley, it also provides a basis for partnership between Berkeley and several other universities, both in US and abroad (in Poland, Latvia, France, Australia, Russia, and Germany).

该奖项是根据2009年美国复苏和再投资法案资助的（公法111-5）。该项目研究了新材料、烧蚀到低温缓冲气体中的顺磁性原子和金刚石晶体中的氮空位（NV）色心，这为创造具有前所未有的参数组合的磁场传感器提供了可能性：超高灵敏度，紧凑的尺寸，宽范围的工作温度等。这些设备的应用范围从最基本的物理学，例如，寻找宇宙的物质-反物质不对称的原因，涉及生物学相关物体的磁显微术和在芯片实验室微流体装置上的核磁共振检测。所提出的工作的智力价值包括目前的理解的自旋退相干的顺磁原子在一个稠密的缓冲气体和NV中心在金刚石在一个很宽的温度范围内的机制的进步，以及获得系统的技术的发展与超长的电子自旋相干寿命。这一发展将对光学和原子物理界产生广泛的影响。该项目借鉴了原子、固态光学和低温物理领域的知识，交叉了这些学科。该实验更广泛影响的另一部分是通过培训研究生和本科生。该项目允许一个广泛的物理技能的独特组合被教导给学生：低温学，光谱学和光泵浦，原子理论，固态光学，非线性光学，激光，电子学，真空技术等，除了扩大伯克利分校的现代低温和光学物理设施，它还提供了伯克利分校和其他几所大学之间的伙伴关系的基础，在美国和国外（波兰、拉脱维亚、法国、澳大利亚、俄罗斯和德国）。