| Literature DB >> 32648067 |
Shulun Li1,2,3, Yao Chen1,4, Xiangjun Shang1, Ying Yu5, Jiawei Yang5, Junhui Huang1,2, Xiangbin Su1, Jiaxin Shen1,6, Baoquan Sun1,2, Haiqiao Ni7,8,9, Xingliang Su10, Kaiyou Wang1,2,3, Zhichuan Niu1,2,3.
Abstract
We proposed a precise calibration process of Al 0.9Ga0.1As/GaAs DBR micropillar cavity to match the single InAs/GaAs quantum dot (QD) exciton emission and achieve cavity mode resonance and a great enhancement of QD photoluminescence (PL) intensity. Light-matter interaction of single QD in DBR micropillar cavity (Q ∼ 3800) under weak coupling regime was investigated by temperature-tuned PL spectra; a pronounced enhancement (14.6-fold) of QD exciton emission was observed on resonance. The second-order autocorrelation measurement shows g(2)(0)=0.070, and the estimated net count rate before the first objective lens reaches 1.6×107 counts/s under continuous wave excitation, indicating highly pure single-photon emission at high count rates.Entities:
Keywords: Cavity mode; Micropillar; Single-photon source; Weak coupling regime
Year: 2020 PMID： 32648067 DOI： 10.1186/s11671-020-03358-1
Source DB: PubMed Journal: Nanoscale Res Lett ISSN： 1556-276X Impact factor: 4.703