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Chin. Phys. B, 2009, Vol. 18(8): 3453-3456    DOI: 10.1088/1674-1056/18/8/054
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Robust scheme for implemention of quantum phase gates for two atoms

Zheng Shi-Biao(郑仕标)
Department of Physics, Fuzhou University, Fuzhou \rm 350002, China
Abstract  We propose a scheme for implementing conditional quantum phase gates for two four-state atoms trapped in a cavity. The two ground states of the atoms are coupled through two Raman processes induced by the cavity mode and two classical fields. Under certain conditions nonresonant Raman processes lead to two-atom coupling and can be used to produce conditional phase gates. The scheme is insensitive to cavity decay, thermal photons, and atomic spontaneous emission. The scheme does not require individual addressing of the atoms.
Keywords:  quantum phase gates      Raman process      two-atom coupling  
Received:  24 September 2008      Revised:  10 November 2008      Accepted manuscript online: 
PACS:  42.50.-p (Quantum optics)  
  03.67.Lx (Quantum computation architectures and implementations)  
  32.30.-r (Atomic spectra?)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No 10674025) and the Doctoral Foundation of the Ministry of Education of China (Grant No 20070386002).

Cite this article: 

Zheng Shi-Biao(郑仕标) Robust scheme for implemention of quantum phase gates for two atoms 2009 Chin. Phys. B 18 3453

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