A simple scheme for implementing four-atom quantum dense coding in cavity QED

被引：6
作者：
Zheng Xiao-Juan [1 ,2 ]
Xu Hui [1 ,2 ]
Fang Mao-Fa [3 ]
Zhu Kai-Cheng [2 ]
机构：
[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China
[2] Cent S Univ, Sch Phys Sci & Technol, Changsha 410083, Peoples R China
[3] Hunan Normal Univ, Coll Phys & Informat Sci, Changsha 410081, Hunan, Peoples R China
来源：
CHINESE PHYSICS B | 2010年 / 19卷 / 01期
关键词：
cavity quantum electrodynamics(QED); quantum dense coding; COMMUNICATION; STATE;
D O I：
10.1088/1674-1056/19/1/010309
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
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.
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页数：5
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