中国物理B ›› 2012, Vol. 21 ›› Issue (4): 44208-044208.doi: 10.1088/1674-1056/21/4/044208

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

束长干,辛霞,刘玉敏,俞重远,姚文杰,王东林,曹贵   

  • 收稿日期:2011-08-20 修回日期:2011-09-28 出版日期:2012-02-29 发布日期:2012-02-29
  • 通讯作者: 刘玉敏,liuyuminhqy@263.net E-mail:liuyuminhqy@263.net

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

Shu Chang-Gan(束长干), Xin Xia(辛霞), Liu Yu-Min(刘玉敏), Yu Zhong-Yuan(俞重远), Yao Wen-Jie(姚文杰), Wang Dong-Lin(王东林), and Cao Gui(曹贵)   

  1. State Key Laboratory of Information Photonics and Optical Communications (Ministry of Education), Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2011-08-20 Revised:2011-09-28 Online:2012-02-29 Published:2012-02-29
  • Contact: Liu Yu-Min,liuyuminhqy@263.net E-mail:liuyuminhqy@263.net
  • Supported by:
    Project supported by the National High Technology Research and Development Program of China (Grant No. 2009AA03Z405), the National Natural Science Foundation of China (Grant Nos. 60908028, 60971068, and 10979065), the Program for New Century Excellent Talents in University (Grant No. NTCE-10-0261), and the Chinese Universities Scientific Fund (Grant No. 2011RC0402).

Abstract: We investigate theoretically two photon entanglement processes in a photonic-crystal cavity embedding a quantum dot in the 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 it 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 the system is analysed by employing the Born-Markov master equation, through which the spectra for the system are computed as a function 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.

Key words: cavity-quantum electrodynamics scheme, entangled photon pairs, pure dephasing, incoherent pumping

中图分类号:  (Quantum state engineering and measurements)

  • 42.50.Dv
03.67.Bg (Entanglement production and manipulation) 03.65.-w (Quantum mechanics) 03.65.Ud (Entanglement and quantum nonlocality)