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:
影响因子:
--
通讯作者:
Zayats AV
中科院分区:
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
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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