Resonance Fermi-Superfluidity in a Carbon Dioxide Laser Trap

二氧化碳激光阱中的共振费米超流性

• 批准号: 0138972
• 负责人: John Thomas
• 金额: $ 39.55万
• 依托单位: Duke University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-05-01 至 2005-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0138972&HistoricalAwards=false
• 关键词: Resonance; Fermi; Superfluidity; Carbon; Dioxide

The objective of this work is the development of a second generation high-power, high-stability CO2 laser trap and its application to study resonant scattering interactions in ultracold two-state mixtures of Li-6 fermions. Of particular interest is the investigation of a new type of superfluid pairing which has recently been predicted to result from very strong resonant attractive interactions in the vicinity of a Feshbach resonance. In such resonance superfluidity, transition temperatures can be a large fraction of the Fermi temperature, far larger than in usual BCS pairing interactions, and much larger than even the highest temperature superconductors known.

这项工作的目标是开发第二代高功率、高稳定性 CO2 激光阱，并将其应用于研究 Li-6 费米子超冷双态混合物中的共振散射相互作用。特别令人感兴趣的是对一种新型超流体配对的研究，最近预测这种配对是由费什巴赫共振附近非常强的共振吸引相互作用产生的。在这种共振超流性中，转变温度可能是费米温度的很大一部分，远大于通常的 BCS 配对相互作用，甚至比已知的最高温度超导体大得多。