Generation of arbitrary four-atom entangled decoherence-free states
Ji Xin(计新)a)b)†, ü Tian-Quan(吕天全)a), and Zhang Shou(张寿) a)b)‡
a Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China; b Department of Physics, College of Science, Yanbian University, Yanji 133002, China
Abstract This paper proposes a scheme to generate arbitrary four-atom entangled decoherence-free states by using simple linear optical elements, four one-sided cavities in which four atoms are confined respectively. By conveniently tuning the titled angle of one half-wave plate, it can obtain arbitrary four-atom entangled decoherence-free states with a successful probability of 1 as long as there is no photon loss.
Received: 07 February 2009
Revised: 04 March 2009
Accepted manuscript online:
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 60667001) and the
Science Foundation of Yanbian University, China (Grant No 2007-35).
Cite this article:
Ji Xin(计新), ü Tian-Quan(吕天全), and Zhang Shou(张寿) Generation of arbitrary four-atom entangled decoherence-free states 2009 Chin. Phys. B 18 5168
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