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Chin. Phys. B, 2009, Vol. 18(2): 588-592    DOI: 10.1088/1674-1056/18/2/033
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Robust generation of high-fidelity entangled states for multiple atoms

Lin Li-Hua(林丽华)
Department of Physics, Fuzhou University, Fuzhou 350002, China
Abstract  A scheme is presented for generating entangled states of multiple atoms in a cavity. In the scheme the atoms simultaneously interact with a cavity mode, with the first atom driven by two classical fields and the other atoms driven by a classical field. Our scheme is valid even if the cavity decay rate is larger than the effective coupling strength, which is important for experiment. The generation of entangled states is conditional on the detection of a photon decaying from the cavity and thus the fidelity of the entangled state is insensitive to the detection inefficiency. Furthermore, the scheme can be applied to the case with any number of atoms in principle.
Keywords:  cavity QED      entangled state      optical cavity  
Received:  22 May 2008      Revised:  24 September 2008      Accepted manuscript online: 
PACS:  42.50.Dv (Quantum state engineering and measurements)  
  42.50.Pq (Cavity quantum electrodynamics; micromasers)  
  03.65.Ud (Entanglement and quantum nonlocality)  
Fund: Project supported by the Doctorate Foundation of the State Education Ministry of China (Grant No 20070386002).

Cite this article: 

Lin Li-Hua(林丽华) Robust generation of high-fidelity entangled states for multiple atoms 2009 Chin. Phys. B 18 588

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