"Raman Laser Cooling and Raman Spin Squeezing"

“拉曼激光冷却和拉曼自旋挤压”

• 批准号: 0244841
• 负责人: Paul Berman
• 金额: --
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-01 至 2008-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0244841&HistoricalAwards=false
• 关键词: Raman; Laser; Cooling; Spin; Squeezing

The counter propagating beams, Raman laser cooling scheme allows one to study new types of sub-Doppler cooling mechanisms which may be used as the basis for steady-state spin-squeezing. If a squeezed state of the radiation field is coupled into the cavity, efficient transfer of the squeezing to the atoms can result. The key intellectual issue examined is how this occurs given the interplay of the Raman population difference and Raman coherence for laser cooling. Methods for explaining the underlying physical mechanisms involved will be developed using dressed atom-field states. This system will also allow a study of the fundamental questions related to the interplay of entanglement and spin squeezing.

反向传播光束，拉曼激光冷却方案允许一种新的类型的亚多普勒冷却机制，可以用作稳态自旋压缩的基础。 如果光场的压缩态被耦合到腔中，则可以将压缩有效地传递到原子。 研究的关键知识问题是，考虑到激光冷却的拉曼布居数差异和拉曼相干性的相互作用，这是如何发生的。 解释所涉及的基本物理机制的方法将使用修饰的原子-场态来开发。 该系统还将允许研究与纠缠和自旋压缩的相互作用有关的基本问题。