Spontaneous emission in non-local materials

被引：85

作者：

Ginzburg, Pavel ^{[1
,2
]}

Roth, Diane J. ^{[1
]}

Nasir, Mazhar E. ^{[1
]}

Segovia, Paulina ^{[1
]}

Krasavin, Alexey V. ^{[1
]}

Levitt, James ^{[1
]}

Hirvonen, Liisa M. ^{[1
]}

Wells, Brian ^{[3
,4
]}

Suhling, Klaus ^{[1
]}

Richards, David ^{[1
]}

Podolskiy, Viktor A. ^{[3
]}

Zayats, Anatoly V. ^{[1
]}

机构：

[1] Kings Coll London, Dept Phys, London WC2R 2LS, England

[2] Tel Aviv Univ, Sch Elect Engn, IL-69978 Tel Aviv, Israel

[3] Univ Massachusetts Lowell, Dept Phys & Appl Phys, One Univ Ave, Lowell, MA 01854 USA

[4] Univ Hartford, Dept Phys, Hartford, CT 06117 USA

来源：

LIGHT-SCIENCE & APPLICATIONS | 2017年 / 6卷

基金：

英国工程与自然科学研究理事会;

关键词：

composite electromagnetic materials; non-local optical properties; plasmonic metamaterials; quantum electrodynamics; spontaneous emission; HYPERBOLIC METAMATERIALS; NONLINEARITY; SPECTROSCOPY; RADIATION;

D O I：

10.1038/lsa.2016.273

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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.

引用

页码：e16273 / e16273

页数：10

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