Population Swap of a Pair of Quantum Dots Coupling to a Plasmonic Nanocavity
LI Jian-Bo1, CHENG Mu-Tian2, YANG Zhong-Jian1, HAO Zhong-Hua1
1Department of Physics and Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 4300722School of Electrical Engineering and Information, Anhui University of Technology, Maanshan 243002
Population Swap of a Pair of Quantum Dots Coupling to a Plasmonic Nanocavity
LI Jian-Bo1, CHENG Mu-Tian2, YANG Zhong-Jian1, HAO Zhong-Hua1
1Department of Physics and Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 4300722School of Electrical Engineering and Information, Anhui University of Technology, Maanshan 243002
摘要We theoretically design a single-mode plasmonic ring nanocavity. Based on the plasmonic cavity, the exciton dynamics between two identical quantum dots (QD-p, QD-q) coupled to the nanocavity are investigated. It is shown that the coupling factors gi (i=p,q) between QD-i and surface plasmons are both equal to 12.53meV in our model and exciton population swap between the two QDs can be realized. The periods and amplitudes of population oscillations can be modified by the coupling factors. Our results may have potential applications in quantum information and quantum computation on a chip.
Abstract：We theoretically design a single-mode plasmonic ring nanocavity. Based on the plasmonic cavity, the exciton dynamics between two identical quantum dots (QD-p, QD-q) coupled to the nanocavity are investigated. It is shown that the coupling factors gi (i=p,q) between QD-i and surface plasmons are both equal to 12.53meV in our model and exciton population swap between the two QDs can be realized. The periods and amplitudes of population oscillations can be modified by the coupling factors. Our results may have potential applications in quantum information and quantum computation on a chip.
(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
引用本文:
LI Jian-Bo;CHENG Mu-Tian;YANG Zhong-Jian;HAO Zhong-Hua. Population Swap of a Pair of Quantum Dots Coupling to a Plasmonic Nanocavity[J]. 中国物理快报, 2009, 26(11): 113202-113202.
LI Jian-Bo, CHENG Mu-Tian, YANG Zhong-Jian, HAO Zhong-Hua. Population Swap of a Pair of Quantum Dots Coupling to a Plasmonic Nanocavity. Chin. Phys. Lett., 2009, 26(11): 113202-113202.
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2009, Vol. 26 
