中国物理B ›› 2010, Vol. 19 ›› Issue (1): 10309-010309.doi: 10.1088/1674-1056/19/1/010309
方卯发1, 郑小娟2, 徐慧2, 朱开成3
Zheng Xiao-Juan(郑小娟)a)b), Xu Hui(徐慧)a)b)†, Fang Mao-Fa(方卯发)c), and Zhu Kai-Cheng(朱开成) b)
摘要: An experimentally feasible scheme for implementing four-atom quantum dense coding of an atom--cavity system is proposed. The cavity is only virtually excited and no quantum information will be transferred from the atoms to the cavity. Thus the scheme is insensitive to cavity decay and the thermal field. In the scheme, Alice can send faithfully 4 bits of classical information to Bob by sending two qubits. Generalized Bell states can be exactly distinguished by detecting the atomic state, and quantum dense coding can be realized in a simple way.
中图分类号: (Cavity quantum electrodynamics; micromasers)