Cavity-Enhanced Superradiant Phenomena in Optically Trapped Atomic Ytterbium

光俘获原子镱中的腔增强超辐射现象

• 批准号: 0101216
• 负责人: Thomas Mossberg
• 金额: $ 43.41万
• 依托单位: University of Oregon Eugene
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-08-01 至 2003-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0101216&HistoricalAwards=false
• 关键词: Cavity; Enhanced; Superradiant; Phenomena; Optically

This project focuses on a study of strong optical superradiance that utilizes cold ytterbium atoms contained within a magneto-optical trap and a short-memory-time optical cavity. Strong superradiance comprises the regime of radiative decay where correlations within a material sample lead to radiative energy damping on time scales substantially different from the natural lifetime of the constituent quantum systems. The use of the short-memory-time cavity accelerates the time scale on which superradiance occurs within a specific atomic sample while leaving the system dynamics otherwise unchanged. As a result, strong superradiance can be observed in optically thin atomic samples and therefore in the absence of intra-sample field propagation effects. The use of cavity acceleration and essentially non-dephasing atomic ytterbium provides the first experimental opportunity to demonstrate and investigate strong superradiance under conditions similar to those assumed in original descriptions.

这个项目的重点是研究强光超辐射，它利用磁光陷阱和短时间记忆光学腔中包含的冷Yb原子。强超辐射包括辐射衰变的区域，其中物质样品中的关联导致辐射能量在与组成量子系统的自然寿命有很大不同的时间尺度上的衰减。短记忆时间腔的使用加速了特定原子样本中发生超辐射的时间尺度，而系统动力学在其他方面保持不变。因此，在光学薄的原子样品中可以观察到很强的超辐射，因此在没有样品内场传播效应的情况下。利用腔加速和本质上非退位相的原子Yb提供了第一个实验机会，在类似于原始描述中假设的条件下演示和研究强超辐射。