Abstract This paper proposes a scheme where one can realize quantum cloning of an unknown two-atom entangled state with assistance of a state preparer in cavity QED. The first stage of the scheme requires usual teleportation. In the second stage of the scheme, with the assistance of the preparer, the perfect copies of an unknown atomic entangled state can be produced.
Received: 31 March 2007
Revised: 19 May 2007
Accepted manuscript online:
Fund: Project supported by the National
Basic Research Program of China (973 Program) (Grant No
2007CB311100), the National High Technology Research and Development
Program of China (Grant Nos 2006AA01Z419 and 20060101Z4015), the
Major Research plan of the National Natural Science Foundation of
China (Grant No 90604023), 2008 Scientific Research Common Program
of Beijing Municipal Commission of Education， The Scientific
Research Foundation for the Youth of Beijing University of
Technology (Grant No 97007016200701), the National Research
Foundation for the Doctoral Program of Higher Education of China
(Grant No 20040013007), the National Laboratory for Modern
Communications
Science Foundation of China (Grant No 9140C1101010601), and the Doctor
Scientific Research Activation Foundation of Beijing University of
Technology (Grant No
52007016200702).
Cite this article:
Zhan You-Bang(詹佑邦) Scheme for realizing assisted cloning of an unknown two-atom entangled state via cavity QED 2008 Chin. Phys. B 17 411
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