Transition to strong coupling regime for a quantum emitter coupled to a plasmonic resonator
Transition to strong coupling regime for a quantum emitter coupled to a plasmonic resonator
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耦合到等离子体谐振器的量子发射器过渡到强耦合状态
DOI：
10.1117/12.2594244
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Shahbazyan, Tigran V.
中科院分区：
文献类型：
--
作者：
More, Jaiden;Williams, Kira;Dai, Qilin;Shahbazyan, Tigran V.
我们提出了一个微观模型，描述了在金属-电介质结构中，发射极与表面等离子体共振耦合到强耦合状态的过渡。我们表明，散射光谱的形状是由两个不同的机制的相互作用。首先是发射器和等离子体激元模式之间的近场耦合，其支撑系统组件之间的能量交换，并在过渡到强耦合状态之前在散射光谱中产生激子诱导的透明度最小值。第二种机制是当系统与辐射场相互作用时等离子体激元偶极子和等离子体激元诱导的发射极的偶极子之间的Fano干涉。我们表明，法诺干涉可以强烈影响散射光谱的整体形状，导致最近在实验中报道的光谱不对称性的反转。
We present a microscopic model describing the transition to strong coupling regime for an emitter resonantly coupled to a surface plasmon in a metal-dielectric structure. We demonstrate that the shape of scattering spectra is determined by an interplay of two distinct mechanisms. First is the near-field coupling between the emitter and the plasmon mode which underpins energy exchange between the system components and gives rise to exciton-induced transparency minimum in scattering spectra prior the transition to strong coupling regime. The second mechanism is Fano interference between the plasmon dipole and the plasmon-induced emitter’s dipole as the system interacts with the radiation field. We show that the Fano interference can strongly affect the overall shape of scattering spectra, leading to the inversion of spectral asymmetry that was recently reported in the experiment.