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Demonstration of Quantum Entanglement Control Using Nuclear Magnetic Resonance |
| XIE Jing-Yi1,2;ZHANG Jing-Fu3;DENG Zhi-Wei4;LU Zhi-Heng3 |
| 1Key Laboratory for Beam Technology and Material Modification of Ministry of Education, Beijing Normal University, Beijing 100875
2Department of Materials Science and Engineering, and Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875
3Department of Physics, Beijing Normal University, Beijing 100875
4Testing and Analytical Centre, Beijing Normal University, Beijing 100875 |
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| Cite this article: |
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XIE Jing-Yi, ZHANG Jing-Fu, DENG Zhi-Wei et al 2004 Chin. Phys. Lett. 21 2343-2346 |
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Abstract With the two forms of the quantum entanglement control, the quantum entanglement swapping and preservation are demonstrated in a three-qubit nuclear magnetic resonance quantum computer. The pseudopure state is prepared to represent the quantum entangled states through macroscopic signals. Entanglement swapping is directly realized by a swap operation. By controlling the interactions between the system and its environment, we can preserve an initial entangled state for a longer time. The experimental results are in agreement with the experiment.
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| Keywords:
03.67.Lx
03.67.Mn
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Published: 01 December 2004
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| PACS: |
03.67.Lx
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(Quantum computation architectures and implementations)
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03.67.Mn
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(Entanglement measures, witnesses, and other characterizations)
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