The mechanism of producing energy-polarization entangled photon pairs in the cavity-quantum electrodynamics scheme

We investigate theoretically two photon entanglement processes in a photonic-crystal cavity embedding a quantum dot in tile strong-coupling regime. The model proposed by Johne et al. （Johne R, Gippius N A, Pavlovic G, Solnyshkov D D, Shelykh I A and Malpuech G 2008 Phys. Rev. Lett. 100 240404）, and...

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Published inChinese physics B Vol. 21; no. 4; pp. 324 - 330
Main Author 束长干 辛霞 刘玉敏 俞覃远 姚文杰 王东林 曹贵
Format Journal Article
LanguageEnglish
Published 01.04.2012
Subjects
Dynamic tests
Dynamical systems
Dynamics
Electrodynamics
Holes
Mathematical analysis
Mathematical models
Photons
Robert
Spectra
偏振
双光子纠缠
机制
纠缠光子对
能源生产
腔量子电动力学
辐射光谱
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ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/21/4/044208

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Summary:We investigate theoretically two photon entanglement processes in a photonic-crystal cavity embedding a quantum dot in tile strong-coupling regime. The model proposed by Johne et al. （Johne R, Gippius N A, Pavlovic G, Solnyshkov D D, Shelykh I A and Malpuech G 2008 Phys. Rev. Lett. 100 240404）, and by Robert et al. （Robert J, Gippius N A and Malpuech G 2009 Phys. Rev. B 79 155317） is modified by considering irreversible dissipation and incoherent continuous pumping for the quantum dot, which is necessary to connect the realistic experiment. The dynamics of tile system is analysed by employing the Born Markov master equation, through which the spectra for the system are computed as a fnnction of various parameters. By means of this analysis the photon-reabsorption process in the strong- coupling regime is first observed and analysed from the perspective of radiation spectrum and the optimal parameters for observing energy-entangled photon pairs are identified.
Bibliography:Shu Chang-Gan, Xin Xia, Liu Yu-Min, Yu Zhong-Yuan, Yao Wen-Jie, Wang Dong-Lin, and Cao Oui（State Key Laboratory of Information Photonics and Optical Communications （Ministry of Education）, Beijing University of Posts and Telecommunications, Beijing 100876, China）
11-5639/O4
cavity-quantum electrodynamics scheme, entangled photon pairs, pure dephasing, inco- herent pumping
We investigate theoretically two photon entanglement processes in a photonic-crystal cavity embedding a quantum dot in tile strong-coupling regime. The model proposed by Johne et al. （Johne R, Gippius N A, Pavlovic G, Solnyshkov D D, Shelykh I A and Malpuech G 2008 Phys. Rev. Lett. 100 240404）, and by Robert et al. （Robert J, Gippius N A and Malpuech G 2009 Phys. Rev. B 79 155317） is modified by considering irreversible dissipation and incoherent continuous pumping for the quantum dot, which is necessary to connect the realistic experiment. The dynamics of tile system is analysed by employing the Born Markov master equation, through which the spectra for the system are computed as a fnnction of various parameters. By means of this analysis the photon-reabsorption process in the strong- coupling regime is first observed and analysed from the perspective of radiation spectrum and the optimal parameters for observing energy-entangled photon pairs are identified.
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ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/21/4/044208