Few-Level Models in Atomic Radiation Theory

原子辐射理论中的少级模型

• 批准号: 0601804
• 负责人: Joseph Eberly
• 金额: $ 21万
• 依托单位: University of Rochester
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-08-01 至 2009-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0601804&HistoricalAwards=false
• 关键词: Few; Level; Models; Atomic; Radiation

A two-part theoretical investigation is proposed of (i) vacuum relaxation processes from the new standpoint of the time dependence of bipartite entropy, and (ii) the emergence of anomalous optical pulse transmission effects in a short-pulse domain not examined previously. Both parts are supported by results obtained in the past twelve months. In part I, a new vacuum relaxation time dependence called sudden death of entanglement will be explored. The results have implications for the design of devices intended for quantum information processing in which preservation of quantum entanglement is needed. Part II is motivated by success in applying a so-called matrix potential method for solving nonlinear evolution equations, for example equations for optical pulse envelopes in nonlinear and quantum optical media. It is expected that such effects as so-called fast light and slow light can be made accessible in the nearly unexplored domain of broadband (very short) pulses, a domain excluded so far by the steady-state assumptions commonly associated with electromagnetically induced transparency.

提出了两部分的理论研究（i）真空弛豫过程的时间依赖性的二分熵的新观点，和（ii）出现的异常光脉冲传输效应在短脉冲域以前没有检查。这两部分都得到了过去12个月所取得的成果的支持。在第一部分中，我们将探讨一种新的真空弛豫时间依赖性，称为纠缠突然死亡。这些结果对需要保留量子纠缠的量子信息处理设备的设计具有影响。第二部分的动机是成功地应用所谓的矩阵势方法求解非线性演化方程，例如非线性和量子光学介质中的光脉冲包络方程。 预计在几乎未被探索的宽带（非常短）脉冲领域，可以获得所谓的快光和慢光等效应，迄今为止，这一领域被通常与电磁感应透明相关的稳态假设所排除。