| Two-Qubit Quantum Logic Gate in Molecular Magnets |
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| 作者姓名： | 侯净敏 田立君 葛墨林 |
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| 作者单位： | [1]Department of Physics, Southeast University, Nanjing 210096 [2]Theoretical Physics Division, Nankai Institute of Mathematics, Nankai University, Tianjin 300071 [3]Department of Physics, Shanghai University, Shanghai 200436 |
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| 基金项目： | Supported by National Natural Science Foundation of China under Grant No 10447125. |
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| 摘 要： |
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| 关 键 词： | 量子逻辑 分子磁场铁 磁场 横向脉冲 非逻辑控制 |
| 收稿时间： | 2005-03-01 |
| 修稿时间： | 2005-03-01 |
Two-Qubit Quantum Logic Gate in Molecular Magnets |
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| Hou JingMin;Tian LiJun;Ge MoLin.Two-Qubit Quantum Logic Gate in Molecular Magnets[J].Chinese Physics Letters,2005,22(9):2147-2150. |
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| Authors: | Hou JingMin;Tian LiJun;Ge MoLin |
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| Abstract: | We propose a scheme to realize a controlled-NOT quantum logic gate in a dimer of exchange coupled singlemolecule magnets, Mn4]2. We chosen the ground state and the three low-lying excited states of a dimer in a finite longitudinal magnetic field as the quantum computing bases and introduced a pulsed transverse magnetic field with a special frequency. The pulsed transverse magnetic field induces the transitions between the quantum computing bases so as to realize a controlled-NOT quantum logic gate. The transition rates between a pair of the four quantum computing bases and between the quantum computing bases and excited states are evaluated and analysed. |
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