Fiber coupled high count-rate single-photon generated from InAs quantum dots

• 作者: Yao Chen Shulun Li Xiangjun Shang Xiangbin Su Huiming Hao Jiaxin Shen Yu Zhang Haiqiao Ni Ying Ding Zhichuan Niu
• 来源期刊: 半导体学报（英文版）
• 年，卷（期）: 2021,（7）
• 所属期刊栏目: ARTICLES
• 页码范围: 75-79
• 页数: 5页
• 语种: 英文
• DOI: 10.1088/1674-4926/42/7/072901

摘要

In this work,we achieve high count-rate single-photon output in single-mode (SM) optical fiber.Epitaxial and dilute InAs/GaAs quantum dots (QDs) are embedded in a GaAs/AlGaAs distributed Bragg reflector (DBR) with a micro-pillar cavity,so as to improve their light emission extraction in the vertical direction,thereby enhancing the optical SM fiber's collection capabil-ity (numerical aperture:0.13).By tuning the temperature precisely to make the quantum dot exciton emission resonant to the micro-pillar cavity mode (Q ～ 1800),we achieve a fiber-output single-photon count rate as high as 4.73 × 106 counts per second,with the second-order auto-correlation g2(0) remaining at 0.08.