期刊
NATURE COMMUNICATIONS
卷 11, 期 1, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-019-13820-z
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资金
- Danish National Research Foundation [DNRF103]
- Danish Council for Independent Research [DFF-6108-00667]
- DOE Computational Science Graduate Fellowship (CSGF) fellowship [DE-FG02-97ER25308]
- VILLUM FONDEN [16498]
- Independent Research Fund Denmark [7079-00043B]
- University of Southern Denmark
- Army Research Office through the Institute for Soldier Nanotechnologies [W911NF-18-2-0048]
- MRSEC Program of the National Science Foundation [DMR-1419807]
Plasmon-emitter interactions are of central importance in modern nanoplasmonics and are generally maximal at short emitter-surface separations. However, when the separation falls below 10-20nm, the classical theory deteriorates progressively due to its neglect of quantum effects such as nonlocality, electronic spill-out, and Landau damping. Here we show how this neglect can be remedied in a unified theoretical treatment of mesoscopic electrodynamics incorporating Feibelman d-parameters. Our approach incorporates nonclassical resonance shifts and surface-enabled Landau damping-a nonlocal damping effect-which have a dramatic impact on the amplitude and spectral distribution of plasmon-emitter interactions. We consider a broad array of plasmon-emitter interactions ranging from dipolar and multipolar spontaneous emission enhancement, to plasmon-assisted energy transfer and enhancement of two-photon transitions. The formalism gives a complete account of both plasmons and plasmon-emitter interactions at the nanoscale, constituting a simple yet rigorous platform to include nonclassical effects in plasmon-enabled nanophotonic phenomena. Plasmonic enhancements of light-matter interactions are generally maximal at short emitter-surface separations. Here, the authors investigate the impact of nonlocality, spill-out, and surface-assisted Landau damping at nanoscale separations using a mesoscopic electrodynamic framework.
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