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arXiv 0902.1862physics.optics
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任意纳米光子环境中二能级量子发射体的取向相关自发发射率

Orientation-dependent spontaneous emission rates of a two-level quantum emitter in any nanophotonic environment

Willem L. Vos, A. Femius Koenderink, Ivan S. Nikolaev

摘要:

我们从理论上研究了嵌入在现实系统中的二能级量子发射体的自发发射率:靠近镜子,靠近等离子体球,或在3D光子带隙晶体。在恒定的频率和位置,我们发现惊人的(高达$10^{2}\times$)变化的发射率通过改变跃迁偶极矩的方向。我们提出了一个一般的表示率与方向,只调用对称性的格林函数。伴随的三维几何表面提供了更多的洞察力,在如何增强(或抑制)的首选方向取决于发射器的频率和位置,并在最佳策略,积极切换发射率通过控制定向偶极子。

英文摘要:

We study theoretically the rate of spontaneous emission of a two-level quantum emitter embedded in realistic systems: near a mirror, near a plasmonic sphere, or in a 3D photonic bandgap crystal. At constant frequency and position, we find striking (up to $10^{2}\times$) variations in emission rate by varying the orientation of the transition dipole moment. We present a general representation of rate versus orientation that only invokes symmetry of the Green function. The concomitant 3-dimensional geometric surfaces provide much insight in how preferred orientations for enhancement (or inhibition) depend on the emitter's frequency and location, and on optimal strategies to actively switch emission rates by controlling oriented dipoles.

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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