Interacting quantum plasmons in metal-dielectric structures
Interacting quantum plasmons in metal-dielectric structures
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DOI：
10.1103/physrevb.103.045421
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发表时间：
2020-08
影响因子：
3.7
通讯作者：
T. Shahbazyan
中科院分区：
文献类型：
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作者：
T. Shahbazyan
我们发展了一个一致的量子描述的表面等离子体与量子发射器和外部电磁场的相互作用。在色散和吸收介质中的宏观电动力学框架内，我们推导出，在马尔可夫近似下，正则哈密顿量，交换关系，和耦合参数的任意形状的金属介质结构的特征尺寸远低于衍射极限的等离子体模式。然后，我们开发了一种新的量子方法桥接的宏观和规范的计划，其中描述了相互作用的等离子体的玻色子模式与线性色散的电磁场和量子发射器的耦合介导的经典等离子体。通过准确地占介质的光学色散和损失的表面等离子体激元与光和本地化的电子激发的相互作用，这种方法可以作为一个框架，研究非马尔可夫效应等离子体激元。
We develop a consistent quantum description of surface plasmons interacting with quantum emitters and external electromagnetic field. Within the framework of macroscopic electrodynamics in dispersive and absorptive medium, we derive, in the Markov approximation, the canonical Hamiltonian, commutation relations, and coupling parameters for the plasmon modes in metal-dielectric structures of an arbitrary shape whose characteristic size is well below the diffraction limit. We then develop a new quantum approach bridging the macroscopic and canonical schemes which describes the interacting plasmons in terms of bosonic modes with linear dispersion whose coupling to the electromagnetic field and quantum emitters is mediated by the classical plasmons. By accurately accounting for medium optical dispersion and losses in the interactions of surface plasmons with light and localized electron excitations, this approach can serve as a framework for studying non-Markovian effects in plasmonics.