Abstract Following the theoretical protocol described by Fortescue and Lo [Fortescue B and Lo H K 2007 Phys. Rev. Lett.98 260501], we present a scheme in which one can distill maximally entangled bi-partite states from a tri-partite $W$ state with cavity QED. Our scheme enables the concrete physical system to realize its protocol. In our scheme, the rate distillation also asymptotically approaches one. Based on the present cavity QED techniques, we discuss the experimental feasibility.
Received: 13 October 2007
Revised: 18 October 2007
Accepted manuscript online:
PACS:
03.67.Mn
(Entanglement measures, witnesses, and other characterizations)
Fund: Project supported by Natural
Science Foundation of Jiangxi, China, (Grant Nos 0612006 and
2007GZW0819), the Scientific Research Foundation of Jiangxi
Provincial Department of Education of China, (Grant No [2007]191),
and the Funds from East China Jiaotong University.
Cite this article:
Deng Li(邓黎), Chen Ai-Xi(陈爱喜), Chen De-Hai(陈德海), and Huang Ke-Lin(黄克林) Distillation of bi-partite entanglement from W state with cavity QED 2008 Chin. Phys. B 17 2514
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