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Implementation of a Multiple Round Quantum Dense Coding Using
Jing-Fu Zhang 1,Jingyi Xie 2,Chuan Wang 1
1.Tsinghua University
2.Beijing Bornal University
*Correspondence author
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Funding: 教育部博士点基金（No.2003-2005）
Opened online:21 February 2005
Accepted by: none
Citation: Jing-Fu Zhang,Jingyi Xie,Chuan Wang.Implementation of a Multiple Round Quantum Dense Coding Using[OL]. [21 February 2005] http://en.paper.edu.cn/en_releasepaper/content/1575
 
 
A multiple round quantum dense coding scheme based on the quantum phase estimation algorithm is proposed and implemented in a three- qubit nuclear magnetic resonance (NMR) quantum computer. Using an $m+1$ qubit system, Bob can transmit one of $2^{m+1}$ messages to Alice, through manipulating only one qubit and exchanging it between Alice and Bob for $m$ rounds. The information capacity is enhanced to $m+1$ bits as compared to $m$ bits in a classical scheme. The scheme has been demonstrated in NMR system, and the experimental results show a good agreement between theory and experiment.
Keywords:multiple-round quantum dense coding; nuclear magnetic resonance implementation
 
 
 

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