| Physical Realization of Quantum C-Not Gate |
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| 作者姓名： | 霍建立 王顺金 陶军 |
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| 作者单位： | Center of Theoretical Physics, School of Physics and Technology, Sichuan University, Chengdu 610064 |
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| 基金项目： | Supported in part by the National Natural Science Foundation of China under Grant Nos 90503088 and 10775100, and the Fund of Theoretical Nuclear Center of HIRFL of China. |
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| 摘 要： | We investigate a Heisenberg spin cluster with two particles controlled by a time-dependent magnetic field. The system is controlled by tuning the amplitude, frequency, and interaction time of the three-step time-dependent magnetic field. Then we solve the time-dependent Schrodinger equation of the two-particle system, and obtain the time evolution operator. By the three-timestep interaction, the wavefunction evolves from the initial state to the final state, and the total evolution operator can be expressed as a product of the three evolution operators. By adjusting the physical parameters, the key two-qubit logic gate, the C-Not gate, can be realized physically.
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| 关 键 词： | C-Not 量子 门电路 物理学 |
| 收稿时间： | 2007-10-17 |
Physical Realization of Quantum C-Not Gate |
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| HUO Jian-Li,WANG Shun-Jin,TAO Jun.Physical Realization of Quantum C-Not Gate[J].Chinese Physics Letters,2008,25(3):813-816. |
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| Authors: | HUO Jian-Li WANG Shun-Jin TAO Jun |
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| Institution: | Center of Theoretical Physics, School of Physics and Technology, Sichuan University, Chengdu 610064 |
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| Abstract: | We investigate a Heisenberg spin cluster with two particles controlled by a time-dependent magnetic field. The system is controlled by tuning the amplitude, frequency, and interaction time of the three-step time-dependent magnetic field. Then we solve the time-dependent Schrodinger equation of the two-particle system, and obtain the time evolution operator. By the three-timestep interaction, the wavefunction evolves from the initial state to the final state, and the total evolution operator can be expressed as a product of the three evolution operators. By adjusting the physical parameters, the key two-qubit logic gate, the C-Not gate, can be realized physically. |
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| Keywords: | 03 65 Ge 03 67 -a |
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