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Bright single-photon sources in the telecom band by deterministically coupling single quantum dots to a hybrid circular Bragg resonator
文献摘要：
High-performance solid-state quantum sources in the telecom band are of paramount importance for long-distance quantum communications and the quantum Internet by taking advantage of a low-loss optical fiber network. Here, we demonstrate bright telecom-wavelength single-photon sources based on In(Ga)As/GaAs quantum dots (QDs) deterministically coupled to hybrid circular Bragg resonators (h-CBRs) by using a wide-field fluorescence imaging technique. The QD emissions are redshifted toward the telecom O-band by using an ultra-low InAs growth rate and an InGaAs strain reducing layer. Single-photon emissions under both continuous wave (CW) and pulsed operations are demonstrated, showing high brightness with count rates of 1.14 MHz and 0.34 MHz under saturation powers and single-photon purities of g(2)(0)=0.11±0.02 (CW) and g(2)(0)=0.087±0.003 (pulsed) at low excitation powers. A Purcell factor of 4.2 with a collection efficiency of 11.2%±1% at the first lens is extracted, suggesting efficient coupling between the QD and h-CBR. Our work contributes to the development of highly efficient single-photon sources in the telecom band for fiber-based quantum communication and future distributed quantum networks.
文献关键词：
中图分类号：
[1] 数理科学和化学（O） / 力学（O3） / 振动理论（O32） / 非线性振动（O322）
[2] 医药、卫生（R） / 基础医学（R3） / 病理学（R36） / 病理过程（R364）
[3] 数理科学和化学（O） / 数学（O1） / 几何、拓扑（O18） / 代数几何（O187） / 代数曲线、代数曲面（O187.1）
作者姓名：
Shi-Wen Xu;Yu-Ming Wei;Rong-Bin Su;Xue-Shi Li;Pei-Nian Huang;Shun-Fa Liu;Xiao-Ying Huang;Ying Yu;Jin Liu;Xue-Hua Wang
作者机构：
State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
文献出处：
光子学研究（英文）
引用格式：
[1]Shi-Wen Xu;Yu-Ming Wei;Rong-Bin Su;Xue-Shi Li;Pei-Nian Huang;Shun-Fa Liu;Xiao-Ying Huang;Ying Yu;Jin Liu;Xue-Hua Wang-.Bright single-photon sources in the telecom band by deterministically coupling single quantum dots to a hybrid circular Bragg resonator)[J].光子学研究（英文）,2022(08):B1
A类：
CBRs,purities
B类：
Bright,single,photon,sources,telecom,band,by,deterministically,coupling,quantum,dots,hybrid,circular,Bragg,High,performance,solid,state,are,paramount,importance,long,distance,communications,Internet,taking,advantage,low,loss,optical,fiber,Here,wavelength,QDs,coupled,resonators,using,wide,field,fluorescence,imaging,technique,emissions,redshifted,toward,ultra,InAs,growth,InGaAs,strain,reducing,layer,Single,under,both,continuous,CW,pulsed,operations,demonstrated,showing,brightness,count,rates,MHz,saturation,powers,excitation,Purcell,collection,efficiency,first,lens,extracted,suggesting,efficient,between,Our,contributes,development,highly,future,distributed,networks
AB值：
0.490026
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