Benchmarking semiclassical and perturbative methods for real-time simulations of cavity-bound emission and interference
Benchmarking semiclassical and perturbative methods for real-time simulations of cavity-bound emission and interference
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DOI：
10.1063/1.5128076
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发表时间：
2019-12-28
影响因子：
4.4
通讯作者：
Kelly, Aaron
中科院分区：
文献类型：
--
作者：
Hoffmann, Norah M.;Schaefer, Christian;Kelly, Aaron
我们通过研究空腔束缚原子系统的相关演化来对一系列半经典和微扰动力学技术进行基准测试，以评估它们在研究涉及量子腔中强光与物质相互作用的问题时的适用性。感兴趣的模型系统具有自发发射、干涉和强耦合行为的特点，需要考虑真空涨落和相关的光物质动力学。我们比较了一系列近似动力学方法，包括最少开关表面跳跃 (FSSH)、多轨迹 Ehrenfest 动力学、线性化半经典动力学和部分线性化半经典动力学。此外，为了研究自洽微扰方法，我们在第二次玻恩近似中应用了 Bogoliubov-Born-Green-Kirkwood-Yvon 层次结构。除了最少的开关表面跳跃之外，所有方法都为相关的光物质动力学提供了合理的精度水平，但大多数方法缺乏完全捕获干扰效应的能力。由 AIP Publishing 许可发布。
We benchmark a selection of semiclassical and perturbative dynamics techniques by investigating the correlated evolution of a cavity-bound atomic system to assess their applicability to study problems involving strong light-matter interactions in quantum cavities. The model system of interest features spontaneous emission, interference, and strong coupling behavior and necessitates the consideration of vacuum fluctuations and correlated light-matter dynamics. We compare a selection of approximate dynamics approaches including fewest switches surface hopping (FSSH), multitrajectory Ehrenfest dynamics, linearized semiclassical dynamics, and partially linearized semiclassical dynamics. Furthermore, investigating self-consistent perturbative methods, we apply the Bogoliubov-Born-Green-Kirkwood-Yvon hierarchy in the second Born approximation. With the exception of fewest switches surface hopping, all methods provide a reasonable level of accuracy for the correlated light-matter dynamics, with most methods lacking the capacity to fully capture interference effects. Published under license by AIP Publishing.