| 由各向异性海森伯自旋环链组成的量子位及其通用量子逻辑门 |
| |
| 引用本文： | 严晓波,王顺金.由各向异性海森伯自旋环链组成的量子位及其通用量子逻辑门[J].物理学报,2006,55(4):1591-1595. |
| |
| 作者姓名： | 严晓波 王顺金 |
| |
| 作者单位： | (1)四川大学物理系,成都 610064; (2)四川大学物理系,成都 610064;兰州重离子加速器国家实验室,兰州 730000 |
| |
| 基金项目： | 中国科学院资助项目;高等学校博士学科点专项科研项目;国家重点实验室基金 |
| |
| 摘 要： | 研究了各向异性耦合的三粒子海森伯自旋环链团簇在随时间变化的磁场中的运动.该系统的哈密顿量具有SU(2)代数结构.用代数动力学方法对此系统进行求解，得到了严格的解析解.基于严格解, 可以构造一位量子逻辑门.通过调节磁场强度和频率, 就可以控制该量子逻辑门, 实现一位量子逻辑门的任何操作.
关键词：
代数动力学
自旋环链团簇
一位量子逻辑门
|
| 关 键 词： | 代数动力学 自旋环链团簇 一位量子逻辑门 |
| 收稿时间： | 12 10 2004 12:00AM |
| 修稿时间： | 2004-12-102005-12-12 |
Single qubit and its universal logic gate made of an annular spin cluster with anisotropic Heisenberg-chain |
| |
| Yan Xiao-Bo,Wang Shun-Jin.Single qubit and its universal logic gate made of an annular spin cluster with anisotropic Heisenberg-chain[J].Acta Physica Sinica,2006,55(4):1591-1595. |
| |
| Authors: | Yan Xiao-Bo Wang Shun-Jin |
| |
| Institution: | 1. Department of Physics , Sichuan University, Chengdu 610064, China; 2. National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China |
| |
| Abstract: | We investigate an annular spin cluster made of three particles with anisotropic Heisenberg-chain controlled by a time-dependent magnetic field. The system has an SU(2) algebraic structure. Using algebraic dynamical method, we have obtained the exact analytical solution to the time dependent Schrdinger 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 consequently six special single qubit logic gates can be realized. |
| |
| Keywords: | algebraic dynamics annular spin cluster universal single qubit logic gate |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《物理学报》浏览原始摘要信息 |
| 点击此处可从《物理学报》下载免费的PDF全文 |
