Generation of a $\chi$-type four-atom entangled state
Shen Hong-Wu(沈洪武)a), Wang Hong-Fu(王洪福)b), Ji Xin(计新)a)b)†, and Zhang Shou(张寿)a)b)‡
a Department of Physics, College of Science, Yanbian University, Yanji 133002, China; b Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China
Abstract This paper proposes a scheme to generate a new $\chi$-type four-atom entangled state for the first time by using linear optics elements, four one-sided cavities (one three-level atom) and a conventional photon detector. The linear optical elements and conventional photon detector are simple and accessible in experiments, which makes the scheme more feasible with current technology. In addition, the state $|\chi^{00}\rangle_{3214}$ with probability 1 can be generated as long as there is no photon loss.
Received: 20 November 2008
Revised: 19 December 2008
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:
Shen Hong-Wu(沈洪武), Wang Hong-Fu(王洪福), Ji Xin(计新), and Zhang Shou(张寿) Generation of a $\chi$-type four-atom entangled state 2009 Chin. Phys. B 18 3706
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