Operating a geometric quantum gate by external controllable parameters |
| |
Authors: | Ji Ying-Hu Cai Shi-Hu Le Jian-Xin and Wang Zi-Sheng |
| |
Institution: | College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 330022, China; Key Laboratory of Optoelectronic and Telecommunication of Jiangxi, Nanchang 330022, China |
| |
Abstract: | A scheme to perfectly preserve an initial qubit state in
geometric quantum computation is proposed for a single-qubit geometric
quantum gate in a nuclear magnetic resonance system. At first, by
adjusting some magnetic field parameters, one can let the dynamic
phase be proportional to the geometric phase. Then, by controlling
the azimuthal angle in the initial state, we may realize a
geometric quantum gate whose fidelity is equal to one under
cyclic evolution. This means that the quantum information is no
distortion in the process of geometric quantum computation. |
| |
Keywords: | geometric phase geometric quantum gate fidelity |
本文献已被 维普 等数据库收录! |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |
|