Tunable quantum dots in monolithic Fabry-Perot microcavities for high-performance single-photon sources
作者机构：State Key Laboratory of Optoelectronic Materials and TechnologiesSchool of Electronics and Information TechnologySun Yat-Sen UniversityGuangzhou 510006China Institute for Quantum Science and TechnologyCollege of ScienceNational University of Defense TechnologyChangsha 410073China College of Advanced Interdisciplinary StudiesNational University of Defense TechnologyChangsha 410073China Hunan Key Laboratory of Quantum Information Mechanism and TechnologyNational University of Defense TechnologyChangsha 410073 HunanChina Hefei National LaboratoryHefei 230088China
出 版 物：《Light(Science & Applications)》 (光（科学与应用)（英文版）)
年 卷 期：2024年第13卷第2期
页 面：325-332页
核心收录：
学科分类：07[理学] 070201[理学-理论物理] 0702[理学-物理学]
基 金：We acknowledge Jin Liu and Yu-Ming He for the valuable discussions.We are grateful for financial support from the Science and Technology Program of Guangzhou(202103030001) the Innovation Program for Quantum Science and Technology(2021ZD0301400,2021ZD0301605) the National Key R&D Program of Guang-dong Province(2020B0303020001) the National Natural Science Foundation of China(12074442,12074433,12174447) the Natural Science Foundation of Hunan Province(2021JJ20051) the science and technology innovation Program of Hunan Province(2021RC3084) the research program of national university of defense technology(ZK21-01,22-ZZCX-067)
摘 要：Cavity-enhanced single quantum dots(QDs)are the main approach towards ultra-high-performance solid-state quantum light sources for scalable photonic quantum ***,harnessing the Purcell effect requires precise spectral and spatial alignment of the QDs’emission with the cavity mode,which is challenging for most *** we have successfully integrated miniaturized Fabry-Perot microcavities with a piezoelectric actuator,and demonstrated a bright single-photon source derived from a deterministically coupled QD within this *** the cavity-membrane structures,we have achieved large spectral tunability via strain *** resonance,a high Purcell factor of~9 is *** source delivers single photons with simultaneous high extraction efficiency of 0.58,high purity of 0.956(2)and high indistinguishability of 0.922(4).Together with its compact footprint,our scheme facilitates the scalable integration of indistinguishable quantum light sources on-chip,therefore removing a major barrier to the development of solid-state quantum information platforms based on QDs.
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