中国物理B ›› 2008, Vol. 17 ›› Issue (6): 1972-1978.doi: 10.1088/1674-1056/17/6/007

• GENERAL • 上一篇    下一篇

Generation of multipartite entangled states by cavity QED

张英杰, 任廷琦, 夏云杰   

  1. Department of Physics, Qufu Normal University, Qufu 273165, China
  • 收稿日期:2007-09-18 修回日期:2007-11-05 出版日期:2008-06-20 发布日期:2008-06-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10774088), the Key Program of National Natural Science Foundation of China (Grant No 10534030) and the Funds from Qufu Normal University, China (Grant No XJ0621).

Generation of multipartite entangled states by cavity QED

Zhang Ying-Jie(张英杰), Ren Ting-Qi(任廷琦), and Xia Yun-Jie(夏云杰)†   

  1. Department of Physics, Qufu Normal University, Qufu 273165, China
  • Received:2007-09-18 Revised:2007-11-05 Online:2008-06-20 Published:2008-06-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10774088), the Key Program of National Natural Science Foundation of China (Grant No 10534030) and the Funds from Qufu Normal University, China (Grant No XJ0621).

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摘要： We propose the methods of generating multipartite entanglement by considering the interaction of a system of $N$ two-level atoms in $M$ cavities of high quality factor with a strong classical driving field. It is shown that, with the cavity detuning, the applied driving field detuning and vacuum Rabi coupling, we can produce an entangled coherent state in two single-mode cavities and generate the entangled coherent cluster states in two bimodal vacuum cavities. Tuning these parameters also allows us to acquire the anti-Jaynes--Cummings (AJC) interaction, with which we can generate the maximally two-photon entangled states, and the two-atom and the two-photon entangled cluster states.

Abstract: We propose the methods of generating multipartite entanglement by considering the interaction of a system of $N$ two-level atoms in $M$ cavities of high quality factor with a strong classical driving field. It is shown that, with the cavity detuning, the applied driving field detuning and vacuum Rabi coupling, we can produce an entangled coherent state in two single-mode cavities and generate the entangled coherent cluster states in two bimodal vacuum cavities. Tuning these parameters also allows us to acquire the anti-Jaynes--Cummings (AJC) interaction, with which we can generate the maximally two-photon entangled states, and the two-atom and the two-photon entangled cluster states.

Key words: Cavity QED, entangled state, anti-Jaynes--Cummings, cluster state

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

  • 42.50.Dv
42.50.Pq (Cavity quantum electrodynamics; micromasers)