Spontaneous emission in non-local materials.

Spontaneous emission in non-local materials.
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DOI:
10.1038/lsa.2016.273
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发表时间:
2017-06
期刊:
Light, science & applications
影响因子:
--
通讯作者:
Zayats AV
Zayats AV
中科院分区:
其他
文献类型:
--
作者:
Ginzburg P;Roth DJ;Nasir ME;Segovia P;Krasavin AV;Levitt J;Hirvonen LM;Wells B;Suhling K;Richards D;Podolskiy VA;Zayats AV

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光与物质的相互作用会受到周围环境的强烈影响。在这里,我们报告的第一个实验观察分子自发辐射内的高度非本地超材料的基础上的等离子体纳米棒组件。我们发现,发射过程不仅受其局域有效介质色散拓扑结构的影响,还受复合材料的非局域响应的影响,因此,具有不同几何参数但局域有效介质性质相同的超材料表现出不同的珀塞尔因子.一个创纪录的高增强的衰变率观察到,在与发达的定量描述的珀塞尔效应在非本地介质中。工程材料的非定域性为量子电动力学引入了额外的自由度,使宏观复合材料在量子信息处理、光化学、成像和传感方面的新应用成为可能。
Light–matter interactions can be strongly modified by the surrounding environment. Here, we report on the first experimental observation of molecular spontaneous emission inside a highly non-local metamaterial based on a plasmonic nanorod assembly. We show that the emission process is dominated not only by the topology of its local effective medium dispersion, but also by the non-local response of the composite, so that metamaterials with different geometric parameters but the same local effective medium properties exhibit different Purcell factors. A record-high enhancement of a decay rate is observed, in agreement with the developed quantitative description of the Purcell effect in a non-local medium. An engineered material non-locality introduces an additional degree of freedom into quantum electrodynamics, enabling new applications in quantum information processing, photochemistry, imaging and sensing with macroscopic composites.
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