期刊
LIGHT-SCIENCE & APPLICATIONS
卷 6, 期 -, 页码 -出版社
CHINESE ACAD SCIENCES, CHANGCHUN INST OPTICS FINE MECHANICS AND PHYSICS
DOI: 10.1038/lsa.2016.273
关键词
composite electromagnetic materials; non-local optical properties; plasmonic metamaterials; quantum electrodynamics; spontaneous emission
类别
资金
- ESPRC (UK)
- ERC iPLASMM project [321268]
- US Army Research Office [W911NF-12-1-0533]
- Royal Society
- Wolfson Foundation
- TAU Rector Grant
- German-Israeli Foundation (GIF) [2399]
- EPSRC [EP/G029806/1, EP/M028054/1, EP/H000917/2, EP/J018457/1, EP/M013812/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G029806/1, EP/M013812/1] Funding Source: researchfish
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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