@article{Sun:2011,
  author  = "L. Sun and G. Li and W. Gu and Z. Ficek",
  title   = "Generating coherence and entanglement with a finite-size atomic ensemble in a ring cavity",
  journal = "New Journal of Physics",
  volume  = "Vol. 13",
  pages   = "1--27",
  year    = "2011",
}