Manipulation and Observation of Spins in a Cavity

腔内自旋的操纵和观察

• 批准号: 1105559
• 负责人: Dan Stamper-Kurn
• 金额: $ 42万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-15 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1105559&HistoricalAwards=false
• 关键词: Manipulation; Observation; Spins; Cavity

This work focuses on the detection, manipulation, and use of cold gases of atoms trapped within a high-quality optical resonator. In such a system, the internal state of the atoms -- their quantum spin -- interacts strongly with light injected into the cavity. This well controlled interaction allows us to explore the quantum limits of how well the spin state of the atomic gas can be measured, to direct light-mediated interactions between the atomic spins, and to examine the behavior of a complex quantum system under constant measurement. Specific aims of the effort are to demonstrate a new range of dynamical phenomena predicted to occur due to feedback between the cavity field and the spin ensemble, and to employ magnetic resonance imaging (MRI) to study dynamical phenomena with the highest spatial resolution. Our scientific findings will clarify how complex non-equilibrium phenomena result from the hybridization of several simple quantum elements, and will shed light on magnetic and transport phenomena in solid-state materials. The work also provides excellent laboratory skills and scientific training to future scientific leaders.

这项工作的重点是被困在高质量光谐振器中的原子的检测，操纵和使用。 在这样的系统中，原子的内部状态（它们的量子自旋）与注入腔内的光强烈相互作用。 这种控制良好的相互作用使我们能够探索如何测量原子气体的自旋状态的量子限制，从而导致原子自旋之间的光介导的相互作用，并检查在恒定测量下复杂量子系统的行为。 该努力的具体目的是证明由于腔场和自旋集合之间的反馈而发生的一系列新的动态现象，并采用磁共振成像（MRI）来研究具有最高空间分辨率的动态现象。 我们的科学发现将阐明几个简单量子元素的杂交导致复杂的非平衡现象是如何产生的，并将揭示固态材料中的磁性和传输现象。 这项工作还为未来的科学领导者提供了出色的实验室技能和科学培训。