期刊
NANO LETTERS
卷 18, 期 8, 页码 4837-4844出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.8b01415
关键词
Quantum plasmonics; nitrogen-vacancy centers; single-photon source; nanodiamonds; nanopatch antennas; epitaxial silver
类别
资金
- U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-SC0017717]
- National Science Foundation NSF-OP Grant [DMR-1506775]
- Office of Naval Research (ONR) DURIP Grant [N00014-16-1-2767]
- DARPA/DSO Extreme Optics and Imaging (EXTREME) Program [HR00111720032]
Solid-state quantum emitters are in high demand for emerging technologies such as advanced sensing and quantum information processing. Generally, these emitters are not sufficiently bright- for practical applications, and a promising solution consists in coupling them to plasmonic nanostructures. Plasmonic nanostructures support broadband modes, making it possible to speed up the fluorescence emission in room-temperature emitters by several orders of magnitude. However, one has not yet achieved such a fluorescence lifetime shortening without a substantial loss in emission efficiency, largely because of strong absorption in metals and emitter bleaching. Here, we demonstrate ultrabright single-photon emission from photostable nitrogen-vacancy (NV) centers in nanodiamonds coupled to plasmonic nanocavities made of low-loss single-crystalline silver. We observe a 70-fold difference between the average fluorescence lifetimes and a 90-fold increase in the average detected saturated intensity. The nanocavity-coupled NVs produce up to 35 million photon counts per second, several times more than the previously reported rates from room-temperature quantum emitters.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据