量子点
光电子学
塞尔效应
光子学
量子
光子
等离子体子
共发射极
单层
量子网络
物理
腔量子电动力学
材料科学
联轴节(管道)
量子光学
自发辐射
纳米技术
量子计算机
光学
量子力学
开放量子系统
激光器
冶金
作者
Yue Luo,Gabriella D. Shepard,Jenny Ardelean,Daniel Rhodes,Bumho Kim,K. Barmak,James Hone,Stefan Strauf
标识
DOI:10.1038/s41565-018-0275-z
摘要
Solid-state single-quantum emitters are a crucial resource for on-chip photonic quantum technologies and require efficient cavity-emitter coupling to realize quantum networks beyond the single-node level. Previous approaches to enhance light-matter interactions rely on forming nanocavities around randomly located quantum dots or color centers but lack spatial control of the quantum emitter itself that is required for scaling. Here we demonstrate a deterministic approach to achieve Purcell-enhancement at lithographically defined locations using the sharp corner of a metal nanocube for both electric field enhancement and to deform a two-dimensional material. For a 3 by 4 array of strain-induced exciton quantum emitters formed into monolayer WSe2 we show spontaneous emission rate enhancement with Purcell-factors (FP) up to FP=1050 (average FP=272), single-photon purification, and cavity-enhanced quantum yields increasing from initially 1 % to 15 %. The utility of our nanoplasmonic platform is applicable to other 2D material, including boron nitride, opening new inroads in quantum photonics.
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