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arXiv 1709.00517quant-ph
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强驱动、密集、纳米级量子系综的单粒子模型

Single particle model of a strongly driven, dense, nanoscale quantum ensemble

C. S. DiLoreto, C. Rangan

摘要:

我们研究了原子间相互作用对由强电磁场驱动的致密纳米级原子系综量子动力学的影响。我们使用自洽的,平均场技术的基础上的伪谱时域方法,和一个完整的,三个方向的基础来解决耦合麦克斯韦-刘维尔方程。我们发现,原子间的相互作用产生的消相干状态的系综上的一个更快的时间尺度比单个原子的激发态寿命。我们提出了一种新的单粒子模型的驱动,密集的合奏,将相互作用到一个退相率。这种单粒子模型再现了完整模拟的基本物理过程,是快速估计密集系综集体动力学的有效方法。

英文摘要:

We study the effects of interatomic interactions on the quantum dynamics of a dense, nanoscale, atomic ensemble driven by a strong electromagnetic field. We use a self-consistent, mean-field technique based on the pseudo-spectral time-domain method, and a full, three-directional basis to solve the coupled Maxwell-Liouville equations. We find that interatomic interactions generate a decoherence in the state of an ensemble on a much faster timescale than the excited state lifetime of individual atoms. We present a novel single-particle model of the driven, dense ensemble by incorporating interactions into a dephasing rate. This single-particle model reproduces the essential physics of the full simulation, and is an efficient way of rapidly estimating the collective dynamics of a dense ensemble.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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