中国物理B ›› 2004, Vol. 13 ›› Issue (12): 2021-2024.doi: 10.1088/1009-1963/13/12/008
黄燕霞1, 詹明生2
Huang Yan-Xia (黄燕霞)ab, Zhan Ming-Sheng (詹明生)b
摘要: In this paper, we present a scheme to prepare a set of the multi-atom entangled states by the cavity quantum electrodynamics (QED) technology. The multi-atom entangled states have some particular entanglement properties. For example, the remaining reduced density matrices ρ_{ij} still retain entanglement or disentanglement when any N-2 atoms of the N atoms are traced out, which can be chosen freely according to our need, and the relative entanglement strength of any pair of atoms (measured by the concurrence) can be arbitrarily adjusted. In addition, they may be completely symmetric under the exchange of any two atoms, and perform certain quantum information tasks, such as telecloning, teleportation, secret sharing and so on.
中图分类号: (Entanglement measures, witnesses, and other characterizations)