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arXiv 2004.11107quant-phphysics.optics
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各向异性介质中的自发发射

Spontaneous emission in anisotropic dielectrics

Anette Messinger, Niclas Westerberg, Stephen M. Barnett

摘要:

原子的发射性质是量子理论和光-物质相互作用的基础。在宏观介质的背景下,准确的知识,其是重要的,无论是在当前的量子技术,以及在基础研究。而对于各向同性介质,这是一个研究得很好的问题,各向异性介质的理论还存在很大的空白。特别是,据我们所知,一般各向异性介质中的自发发射率的显式表达式尚未提出。本文首先导出了计算单轴介质中辐射率的量子化电磁场算符。对于双轴介质的更一般的情况下,我们提出了一个近似的表达单轴介质的极限情况之间的插值。我们支持我们的模型与数值模拟,这是在典型的介质配置的强烈协议,并进一步显示如何本地场效应可以考虑在模型中。

英文摘要:

The emission properties of atoms lie at the foundations of both quantum theory and light-matter interactions. In the context of macroscopic media, exact knowledge thereof is important both in current quantum technologies as well as in fundamental studies. While for isotropic media, this is a very well-studied problem, there are still big gaps in the theory of anisotropic media. In particular, to the best of our knowledge, an explicit expression for the spontaneous emission rate in general anisotropic media has not been presented. In this work, we first derive the quantised electromagnetic field operators to calculate the emission rate in uniaxial media. For the more general case of biaxial media we propose an approximate expression based on interpolation between the limiting cases of uniaxial media. We support our model with numerical simulations which are in strong agreement for typical media configurations, and furthermore show how local field effects can be taken into account in the model.

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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