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Chin. Phys. B, 2010, Vol. 19(3): 030311    DOI: 10.1088/1674-1056/19/3/030311
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Generation of entanglement in the atom-cavity-fibre system via adiabatic passage

Li Yan-Ling(李艳玲) and Fang Mao-Fa(方卯发)
College of Physics and Information Science, Hunan Normal University, Changsha 410081, China
Abstract  A scheme, based on the system composed of three atoms separately trapped in three cavities coupled by optical fibres, for entangling two distant atoms via the adiabatic passage is proposed. It is found that the multi-particle W entangled state can also be generated. Moreover, the quantum information sharing can be implemented using this system. These results may be helpful for the implementation of quantum network and useful in quantum cryptography. This scheme is also convenient for operating since only the laser fields applied to the atoms need to be adjusted to accomplish the processes.
Keywords:  entanglement generation      quantum information splitting      atom--cavity--fibre system  
Received:  18 June 2009      Revised:  13 August 2009      Accepted manuscript online: 
PACS:  37.10.De (Atom cooling methods)  
  03.67.Mn (Entanglement measures, witnesses, and other characterizations)  
  03.67.Dd (Quantum cryptography and communication security)  
  42.50.Dv (Quantum state engineering and measurements)  
  42.81.-i (Fiber optics)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No.~10374025) and the Natural Science Foundation of Hunan Province of China (Grant No.~07JJ3013).

Cite this article: 

Li Yan-Ling(李艳玲) and Fang Mao-Fa(方卯发) Generation of entanglement in the atom-cavity-fibre system via adiabatic passage 2010 Chin. Phys. B 19 030311

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