Classical and quantum control of a simple quantum system
文献类型：期刊论文
| 作者 | Xi, Zairong ; Jin, Guangsheng2
|
| 刊名 | INTERNATIONAL JOURNAL OF QUANTUM INFORMATION
 |
| 出版日期 | 2007-12-01 |
| 卷号 | 5期号:6页码:857-884 |
| 关键词 | quantum control quantum information quantum channel bit-flipping noise quantum communication classical control |
| ISSN号 | 0219-7499 |
| 英文摘要 | A qubit which is prepared in one of two non-orthogonal states and subjected to bit. flipping noise is considered. The objective is to use measurement and feedback control to correct the state of the qubit. Three classical schemes using projective measurements, i. e. discrimination and re-preparation, do nothing and random preparation, have been discussed, and are not optimal with respect to a performance which is quantified by the average fidelity of the corrected state compared to the initial state. In addition, one quantum scheme using a non-projective measurement with an optimum measurement strength achieves the best trade-off between gaining information about the system and disturbing it through measurement back-action. The performance of a quantum control scheme outperforms the classical schemes. Furthermore, no universal corrected scheme is discussed. |
| WOS研究方向 | Computer Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000252194300008 |
| 出版者 | WORLD SCIENTIFIC PUBL CO PTE LTD |
| 源URL | [http://ir.amss.ac.cn/handle/2S8OKBNM/4249]  |
| 专题 | 系统科学研究所 |
| 通讯作者 | Xi, Zairong |
| 作者单位 | 1.Acad Math & Syst Sci, Inst Syst Sci, Key Lab Syst & Control, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xi, Zairong,Jin, Guangsheng. Classical and quantum control of a simple quantum system[J]. INTERNATIONAL JOURNAL OF QUANTUM INFORMATION,2007,5(6):857-884. |
| APA | Xi, Zairong,&Jin, Guangsheng.(2007).Classical and quantum control of a simple quantum system.INTERNATIONAL JOURNAL OF QUANTUM INFORMATION,5(6),857-884. |
| MLA | Xi, Zairong,et al."Classical and quantum control of a simple quantum system".INTERNATIONAL JOURNAL OF QUANTUM INFORMATION 5.6(2007):857-884. |
入库方式： OAI收割
来源：数学与系统科学研究院
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