Efficient single-photon-assisted entanglement concentration for partially entangled photon pairs
文献类型：期刊论文
| 作者 | Sheng, YB ; Zhou, L ; Zhao, SM ; Zheng, BY |
| 刊名 | PHYSICAL REVIEW A
 |
| 出版日期 | 2012 |
| 卷号 | 85期号:1 |
| 关键词 | QUANTUM CRYPTOGRAPHY PRACTICAL SCHEME NOISY CHANNELS PURIFICATION COMMUNICATION COMPUTATION STATE TELEPORTATION PROTOCOLS |
| ISSN号 | 1050-2947 |
| 通讯作者 | Sheng, YB: Nanjing Univ Posts & Telecommun, Inst Signal Proc Transmiss, Nanjing 210003, Peoples R China. |
| 中文摘要 | We present two realistic entanglement concentration protocols (ECPs) for pure partially entangled photons. A partially entangled photon pair can be concentrated to a maximally entangled pair with only an ancillary single photon with a certain probability, while the conventional ECPs require two copies of partially entangled pairs at least. Our first protocol is implemented with linear optics and the second protocol is implemented with cross-Kerr-nonlinearities. Compared with other ECPs, they do not need to know the accurate coefficients of the initial state. With linear optics, it is feasible with current experiments. With cross-Kerr-nonlinearities, it does not require sophisticated single-photon detectors and can be repeated to get a higher success probability. Moreover, the second protocol can get the higher entanglement transformation efficiency and it may be the most economical protocol by far. Meanwhile, both protocols are more suitable for multiphoton system concentration because they need less operations and classical communications. All these advantages make the two protocols useful in current long-distance quantum communications. |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [11104159]; Scientific Research Foundation of Nanjing University of Posts and Telecommunications [NY211008]; University Natural Science Research Foundation of JiangSu Province [11KJA510002]; Key Lab of Broadband Wireless Communication and Sensor Network Technology (Nanjing University of Posts and Telecommunications), Ministry of Education, China; Jiangsu Higher Education Institutions |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/36867]  |
| 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 | Sheng, YB,Zhou, L,Zhao, SM,et al. Efficient single-photon-assisted entanglement concentration for partially entangled photon pairs[J]. PHYSICAL REVIEW A,2012,85(1). |
| APA | Sheng, YB,Zhou, L,Zhao, SM,&Zheng, BY.(2012).Efficient single-photon-assisted entanglement concentration for partially entangled photon pairs.PHYSICAL REVIEW A,85(1). |
| MLA | Sheng, YB,et al."Efficient single-photon-assisted entanglement concentration for partially entangled photon pairs".PHYSICAL REVIEW A 85.1(2012). |
入库方式： OAI收割
来源：物理研究所
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