Minimal input sets determining phase-covariant and universal quantum cloning
文献类型：期刊论文
| 作者 | Jing, L ; Wang, YN ; Shi, HD ; Mu, LZ ; Fan, H |
| 刊名 | PHYSICAL REVIEW A
 |
| 出版日期 | 2012 |
| 卷号 | 86期号:6 |
| 关键词 | CRYPTOGRAPHY STATES QUBITS |
| ISSN号 | 1050-2947 |
| 通讯作者 | Mu, LZ: Peking Univ, Sch Phys, Beijing 100871, Peoples R China. |
| 中文摘要 | We study the minimal input sets which can determine completely the universal and the phase-covariant quantum cloning machines. We find that the universal quantum cloning machine, which can copy an arbitrary input qubit to two identical copies, however, can be determined completely by only four input states located at the four vertices of a tetrahedron in a Bloch sphere. The phase-covariant quantum cloning machine, which can create two copies from an arbitrary qubit located on the equator of the Bloch sphere, can be determined by three qubits located symmetrically on the equator of the Bloch sphere with equal relative phase. These results sharpen further the well-known results that Bennett-Brassard 1984 protocol (BB84) states and six states used in quantum cryptography can determine completely the phase-covariant and universal quantum cloning machines. This can simplify the testing procedure of whether the quantum clone machines are successful or not; namely, we only need to check that the minimal input sets can be cloned optimally, which can ensure that the quantum clone machines can work well for all input states. |
| 收录类别 | SCI |
| 资助信息 | NSFC [11175248]; "973" Program [2010CB922904]; NFFTBS [J1030310] |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/42170]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Jing, L,Wang, YN,Shi, HD,et al. Minimal input sets determining phase-covariant and universal quantum cloning[J]. PHYSICAL REVIEW A,2012,86(6). |
| APA | Jing, L,Wang, YN,Shi, HD,Mu, LZ,&Fan, H.(2012).Minimal input sets determining phase-covariant and universal quantum cloning.PHYSICAL REVIEW A,86(6). |
| MLA | Jing, L,et al."Minimal input sets determining phase-covariant and universal quantum cloning".PHYSICAL REVIEW A 86.6(2012). |
入库方式： OAI收割
来源：物理研究所
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