文献类型：期刊文献

英文题名：Control of electromagnetically induced grating by surface plasmon and tunneling in a hybrid quantum dot-metal nanoparticle system

作者：You, Yu[1];Qi, Yi-Hong[1];Niu, Yue-Ping[1];Gong, Shang-Qing[1]

机构：[1]East China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China

年份：2019

卷号：31

期号：10

外文期刊名：JOURNAL OF PHYSICS-CONDENSED MATTER

收录：;EI(收录号：20191006589494);WOS:【SCI-EXPANDED(收录号:WOS:000456271800001)】；

基金：This work was supported by the National Natural Science Foundation of China (grant Nos. 11474092, 11774089 and 11874146) and Shanghai Natural Science Fund Project (grant No. 17ZR1442700). Yihong Qi also acknowledges the support by China Scholarship Council under the grant No. 201506745029.

语种：英文

外文关键词：electromagnetically induced grating; electromagnetically induced transparency; plasmon-exciton effect; tunneling; quantum dot-metal nanoparcle

摘要：We investigate the electromagnetically induced grating (EIG) in a quantum dot-metal nanoparticle (QD-MNP) hybrid system. The EIG can be controlled and improved by the surface plasmon effect and the interdot tunneling effect between quantum dots. By manipulating the tunneling effect and the QD-MNP distance, not only the first-order diffraction intensity of the grating can be efficiently enhanced, but also the EIG can be switched from the absorption grating to the gain grating. Almost two times the first-order diffraction efficiencies can be achieved in the gain gratings compared with the absorption gratings.