Filter-free high-performance single-photon emission from a quantum dot in a Fabry–Perot microcavity  

作　　者：JIAWEI YANG ZHIXUAN RAO CHANGKUN SONG MUJIE RAO ZIYANG ZHENG LUYU LIU XUEBIN PENG YING YU SIYUAN YU 

机构地区：[1]State Key Laboratory of Optoelectronic Materials and Technologies,School of Electronics and Information Technology,Sun Yat-sen University,Guangzhou 510006,China [2]Hefei National Laboratory,Hefei 230088,China

出　　处：《Photonics Research》2024年第10期2130-2138,共9页光子学研究（英文版）

基　　金：Key R&D Program of Guangdong Province(2020B0303020001);National Natural Science Foundation of China(12074442);Innovation Program for Quantum Science and Technology(2021ZD0301400);Science and Technology Program of Guangzhou(202103030001)。

摘　　要：Combining resonant excitation with Purcell-enhanced single quantum dots(QDs)stands out as a prominent strategy for realizing high-performance solid-state single-photon sources.However,optimizing photon extraction efficiency requires addressing the challenge of effectively separating the excitation laser from the QDs’emission.Traditionally,this involves polarization filtering,limiting the achievable polarization directions and the scalability of polarized photonic states.In this study,we have successfully tackled this challenge by employing spatially orthogonal resonant excitation of QDs,deterministically coupled to monolithic Fabry–Perot microcavities.Leveraging the planar microcavity structure,we have achieved spectral filter-free single-photon resonant fluorescence.The resulting source produces single photons with a high extraction efficiency of 0.87 and an indistinguishability of 0.963(4).

关 键 词：RESONANT quantum EXCITATION 

分 类 号：O413[理学—理论物理] TN713[理学—物理]