| Single Qubit and Its Universal Logic Gate Made of a Heisenberg Spin Cluster with Five Particles |
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| 作者姓名： | 陶军 王顺金 |
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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 by the National Natural Science Foundation of China under Grant Nos 10375039 and 90503008, the Doctoral Fund of Ministry of Education of China, and the Center of Theoretical Nuclear Physics of HIRFL of China. |
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| 摘 要： |
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| 关 键 词： | 通用逻辑门 海森堡自旋团簇 单量子比特 五粒子 代数结构 解析解 量子计算机 |
| 收稿时间： | 2006-08-09 |
| 修稿时间： | 2006-08-09 |
Single Qubit and Its Universal Logic Gate Made of a Heisenberg Spin Cluster with Five Particles |
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| TAO Jun,WANG Shun-Jin.Single Qubit and Its Universal Logic Gate Made of a Heisenberg Spin Cluster with Five Particles[J].Chinese Physics Letters,2006,23(12):3131-3134. |
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| Authors: | TAO Jun WANG Shun-Jin |
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| Affiliation: | Center of Theoretical Physics, School of Physics and Technology, Sichuan University, Chengdu 610064 |
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| Abstract: | We investigate an anisotropic Heisenberg spin cluster with five particles controlled by a time-dependent magnetic field. With the algebraic dynamical method, we obtain the exact analytical solution to the time dependent Schr6dinger equation. Based on the analytical solution, it is shown that the system can be used as a universal single qubit logic gate controlled by the strength and frequency of the magnetic field, and the six special single qubit logic gates can be realized physically. We also discuss the anti-decoherence property of the qubit and its logic gates resulted from particle coupling effect and collectivity of the cluster. |
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| Keywords: | 03 65 Fd 03 67 -a |
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