GaAs droplet quantum dots with nanometer-thin capping layer for plasmonic applications

Autor:	Park, Suk In, Trojak, Oliver Joe, Lee, Eunhye, Song, Jin Dong, Kyhm, Jihoon, Han, Ilki, Kim, Jongsu, Yi, Gyu-Chul, Sapienza, Luca
Rok vydání:	2017
Předmět:	Physics - Optics Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Materials Science Physics - Applied Physics Quantum Physics
Zdroj:	Nanotechnology 29, 205602 (2018)
Druh dokumentu:	Working Paper
DOI:	10.1088/1361-6528/aab2e1
Popis:	We report on the growth and optical characterisation of droplet GaAs quantum dots with extremely-thin (11 nm) capping layers. To achieve such result, an internal thermal heating step is introduced during the growth and its role in the morphological properties of the quantum dots obtained is investigated via scanning electron and atomic force microscopy. Photoluminescence measurements at cryogenic temperatures show optically stable, sharp and bright emission from single quantum dots, at near-infrared wavelengths. Given the quality of their optical properties and the proximity to the surface, such emitters are ideal candidates for the investigation of near field effects, like the coupling to plasmonic modes, in order to strongly control the directionality of the emission and/or the spontaneous emission rate, crucial parameters for quantum photonic applications. Comment: 1 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1710.10635 Zobrazit plný text záznamu View this record from Arxiv