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Chin. Phys. B, 2008, Vol. 17(9): 3217-3219    DOI: 10.1088/1674-1056/17/9/012
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Generation of four-photon W state via cavity QED

Zhong Zhi-Rong(钟志荣)
Department of Physics, Fuzhou University, Fuzhou 350002, China
Abstract  This paper proposes an alternative scheme for generating four-photon W state via cavity QED. The scheme bases on the resonant interaction of a $\varLambda$ -type three level atom with two bimodal cavities. The detection of atom collapses the cavity to the desired state. Comparing with previous schemes, the advantage of this scheme is that the interaction time can be greatly shortened since it uses the resonant interaction between atom and cavities. Moreover, the proposed scheme is more experimentally feasible than the previous ones.
Keywords:  W state      resonant interaction  
Received:  20 August 2007      Revised:  16 November 2007      Accepted manuscript online: 
PACS:  42.50.Pq (Cavity quantum electrodynamics; micromasers)  
  03.65.Ud (Entanglement and quantum nonlocality)  
  03.67.Mn (Entanglement measures, witnesses, and other characterizations)  
  42.50.Dv (Quantum state engineering and measurements)  
  42.50.Hz (Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)  
Fund: Project supported by National Natural Science Foundation of China (Grant No 10674025) and the Development Funds of Fuzhou University of China (Grant No 2007-XY-15).

Cite this article: 

Zhong Zhi-Rong(钟志荣) Generation of four-photon W state via cavity QED 2008 Chin. Phys. B 17 3217

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