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| Dense coding scheme using superpositions of Bell-states and its NMR implementation | |
| 引用本文： | ZHANG Jingfu,XIE Jingyi,DENG Zhiwei & LU Zhiheng Key Laboratory for Quantum Information and Measurements,Department of Physics,Tsinghua University,Beijing 100084,China, Center for Quantum Information,Tsinghua University,Beijing 100084,China, Department of Materials Science and Engineering,Beijing Normal University,Beijing 100875,China, Testing and Analytical Center,Beijing Normal University,Beijing 100875,China, Department of Physics,Beijing Normal University,Beijing 100875,China. Dense coding scheme using superpositions of Bell-states and its NMR implementation[J]. 中国科学G辑(英文版), 2005, 48(1): 57-67. DOI: 10.1007/BF02736586 |
| 作者姓名： | ZHANG Jingfu XIE Jingyi DENG Zhiwei & LU Zhiheng Key Laboratory for Quantum Information and Measurements Department of Physics Tsinghua University Beijing 100084 China Center for Quantum Information Tsinghua University Beijing 100084 China Department of Materials Science and Engineering Beijing Normal University Beijing 100875 China Testing and Analytical Center Beijing Normal University Beijing 100875 China Department of Physics Beijing Normal University Beijing 100875 China |
| 作者单位： | ZHANG Jingfu，XIE Jingyi，DENG Zhiwei & LU Zhiheng Key Laboratory for Quantum Information and Measurements，Department of Physics，Tsinghua University，Beijing 100084，China; Center for Quantum Information，Tsinghua University，Beijing 100084，China; Department of Materials Science and Engineering，Beijing Normal University，Beijing 100875，China; Testing and Analytical Center，Beijing Normal University，Beijing 100875，China; Department of Physics，Beijing Normal University，Beijing 100875，China |
| 基金项目： | 国家自然科学基金，中国博士后科学基金 |
| 摘 要： | Dense coding using superpositions of Bell-states is proposed. The generalized Grover's algorithm is used to prepare the initial entangled states, and the reverse process of the quantum algorithm is used to determine the entangled state in the decoding measurement. Compared with the previous schemes, the superpositions of two Bell-states are exploited. Our scheme is demonstrated using a nuclear magnetic resonance (NMR) quantum computer. The corresponding manipulations are obtained. Experimental results show a good agreement between theory and experiment. We also generalize the scheme to transmit eight messages by introducing an additional two-state system. |
| 收稿时间： | 2004-06-08 |
Dense coding scheme using superpositions of Bell-states and its NMR implementation |
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| ZHANG Jingfu,XIE Jingyi,Deng Zhiwei,LU Zhiheng. Dense coding scheme using superpositions of Bell-states and its NMR implementation[J]. Science in China(Physics Astronomy), 2005, 48(1): 57-67. DOI: 10.1007/BF02736586 | |
| Authors: | ZHANG Jingfu XIE Jingyi Deng Zhiwei LU Zhiheng |
| Affiliation: | 1. Key Laboratory for Quantum Information and Measurements, Department of Physics, Tsinghua University, Beijing 100084, China;Center for Quantum Information, Tsinghua University, Beijing 100084, China 2. Department of Materials Science and Engineering, Beijing Normal University, Beijing 100875, China 3. Testing and Analytical Center, Beijing Normal University, Beijing 100875, China 4. Department of Physics, Beijing Normal University, Beijing 100875, China |
| Abstract: | Dense coding using superpositions of Bell-states is proposed. The generalized Grover's algorithm is used to prepare the initial entangled states, and the reverse process of the quantum algorithm is used to determine the entangled state in the decoding measurement. Compared with the previous schemes, the superpositions of two Bell-states are exploited. Our scheme is demonstrated using a nuclear magnetic resonance (NMR) quantum computer. The corresponding manipulations are obtained. Experimental results show a good agreement between theory and experiment. We also generalize the scheme to transmit eight messages by introducing an additional two-state system. |
| Keywords: | dense coding superpositions of Bell-states generalized Grover's algorithm nuclear magnetic resonance quantum computer. |
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