Kosik Miriam, Słowik Karolina
Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Toruń, Grudziadzka 5, 87-100 Torun, Poland.
Entropy (Basel). 2020 Jan 23;22(2):135. doi: 10.3390/e22020135.
In this paper, we study the collective effects which appear as a pair of quantum emitters is positioned in close vicinity to a plasmonic nanoparticle. These effects include multipole-multipole interaction and collective decay, the strengths and rates of which are modified by the presence of the nanoparticle. As a result, entanglement is generated between the quantum emitters, which survives in the stationary state. To evaluate these effects, we exploit the Green's tensor-based quantization scheme in the Markovian limit, taking into account the corrections from light-matter coupling channels higher than the electric dipole. We find these higher-order channels to significantly influence the collective rates and degree of entanglement, and in particular, to qualitatively influence their spatial profiles. Our findings indicate that, apart from quantitatively modifying the results, the higher-order interaction channels may introduce asymmetry into the spatial distribution of the collective response.
在本文中，我们研究了当一对量子发射体紧邻等离激元纳米粒子放置时出现的集体效应。这些效应包括多极 - 多极相互作用和集体衰变，纳米粒子的存在会改变其强度和速率。结果，量子发射体之间产生了纠缠，并且这种纠缠在稳态中得以保留。为了评估这些效应，我们在马尔可夫极限下利用基于格林张量的量子化方案，同时考虑了高于电偶极子的光 - 物质耦合通道的修正。我们发现这些高阶通道会显著影响集体速率和纠缠程度，特别是在定性上影响它们的空间分布。我们的研究结果表明，除了在定量上改变结果外，高阶相互作用通道可能会给集体响应的空间分布引入不对称性。
