Quantum Coupling Effect between Quantum Dot and Quantum Well in a Resonant Tunneling Photon-Number-Resolving Detector  

作　　者：翁钱春 安正华 熊大元 朱自强 

机构地区：[1]Key Laboratory of Polar Materials and Devices(Ministry of Education), East China Normal University, Shanghai 200241 [2]State Key Laboratory of Surface Physics and Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Physics, Fudan University, Shanghai 200433 [3]Collaborative Innovation Center of Advanced Microstructures, Fudan University, Shanghai 200433

出　　处：《Chinese Physics Letters》2015年第10期162-165,共4页中国物理快报（英文版）

基　　金：Supported by the National Basic Research Program of China under Grant No 2011CB925600;the National Natural Science Foundation of China under Grant Nos 11427807,91321311,10990100,11174057 and 61106092;the Shanghai Science and Technology Committee under Grant No 14JC1406600

摘　　要：Excited states of lnAs quantum dots （QDs） can be energetically coupled with the confined level of OaAs quantum wells （QWs） in a thin-barrier resonant tunneling diode （RTD）. Single charge variation in the coupled QD can effectively switch on/off the resonant tunneling current passing through RTD, not only for emcient single-photon detection but also for photon-number-resolving detection. We present the study of the Q,D-QW coupling effect in the quantum dot coupled resonant tunneling diode （QD-cRTD） and figure out important factors for further improving the detector performance.Excited states of lnAs quantum dots （QDs） can be energetically coupled with the confined level of OaAs quantum wells （QWs） in a thin-barrier resonant tunneling diode （RTD）. Single charge variation in the coupled QD can effectively switch on/off the resonant tunneling current passing through RTD, not only for emcient single-photon detection but also for photon-number-resolving detection. We present the study of the Q,D-QW coupling effect in the quantum dot coupled resonant tunneling diode （QD-cRTD） and figure out important factors for further improving the detector performance.

关 键 词：Quantum Coupling Effect between Quantum Dot and Quantum Well in a Resonant Tunneling Photon-Number-Resolving Detector RTD QDs 

分 类 号：O471.1[理学—半导体物理]