中国物理B ›› 2008, Vol. 17 ›› Issue (1): 64-69.doi: 10.1088/1674-1056/17/1/012

• GENERAL • 上一篇    下一篇

Generation of multiple-particle cluster state via cavity QED

林功伟, 林秀敏, 陈立波, 杜茜华, 陈志华   

  1. School of Physics and Optoelectronics Technology, Fujian Normal University, Fuzhou 350007, China
  • 出版日期:2008-01-20 发布日期:2008-01-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10574022), the Natural Science Foundation of Fujian Province of China (Grant Nos 2007J0002 and 2006J0230), and Funds of Education Committee of Fujian Province of China (Grant

Generation of multiple-particle cluster state via cavity QED

Lin Gong-Wei(林功伟), Lin Xiu-Min(林秀敏)†, Chen Li-Bo(陈立波), Du Qian-Hua(杜茜华), and Chen Zhi-Hua(陈志华)   

  1. School of Physics and Optoelectronics Technology, Fujian Normal University, Fuzhou 350007, China
  • Online:2008-01-20 Published:2008-01-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10574022), the Natural Science Foundation of Fujian Province of China (Grant Nos 2007J0002 and 2006J0230), and Funds of Education Committee of Fujian Province of China (Grant

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摘要： This paper proposes schemes for generating multiple-photon and multiple-atom cluster states, respectively. The schemes are based on the cavity input--output process and atomic or photonic states measurement, and the successful probabilities approach unity in the ideal case. The numerical simulations show that the produced multiple-particle cluster states have high fidelity even if the Lamb--Dicke condition is not satisfied. Some practical imperfections, such as atomic spontaneous emission and output coupling inefficiency, only decrease the success probability but exert no influence on the fidelity of generated multiple-particle cluster states. From the experimental point of view, smaller operation number and lack of need for individual addressing keeps the schemes easy to implement. These schemes may offer a promising approach to the generation of a large-scale cluster state.

Abstract: This paper proposes schemes for generating multiple-photon and multiple-atom cluster states, respectively. The schemes are based on the cavity input--output process and atomic or photonic states measurement, and the successful probabilities approach unity in the ideal case. The numerical simulations show that the produced multiple-particle cluster states have high fidelity even if the Lamb--Dicke condition is not satisfied. Some practical imperfections, such as atomic spontaneous emission and output coupling inefficiency, only decrease the success probability but exert no influence on the fidelity of generated multiple-particle cluster states. From the experimental point of view, smaller operation number and lack of need for individual addressing keeps the schemes easy to implement. These schemes may offer a promising approach to the generation of a large-scale cluster state.

Key words: cluster state, cavity QED

中图分类号:  (Cavity quantum electrodynamics; micromasers)

  • 42.50.Pq
03.65.Ud (Entanglement and quantum nonlocality) 32.50.+d (Fluorescence, phosphorescence (including quenching)) 36.40.Mr (Spectroscopy and geometrical structure of clusters)