Efficient entanglement purification in quantum repeaters
文献类型：期刊论文
| 作者 | Sheng, YB ; Zhou, L ; Cheng, WW ; Gong, LY ; Zhao, SM ; Zheng, BY |
| 刊名 | CHINESE PHYSICS B
 |
| 出版日期 | 2012 |
| 卷号 | 21期号:3 |
| 关键词 | SECURE DIRECT COMMUNICATION BELL-STATE MEASUREMENTS M-QUBIT STATE NOISY CHANNELS ATOMIC ENSEMBLES LINEAR OPTICS EPR PAIRS TELEPORTATION CRYPTOGRAPHY SECRET |
| ISSN号 | 1674-1056 |
| 通讯作者 | Sheng, YB: Nanjing Inst Posts & Telecommun, Inst Signal Proc Transmiss, Nanjing 210003, Peoples R China. |
| 中文摘要 | The very initial growth stage of YBa2Cu3O7-delta (YBCO) thin films by pulse laser deposition (PLO) on (001) SrTiO3 (STO) substrates was investigated in situ using a home-made RHEED system. At a relatively high temperature at 820 degrees C and low repetition rate of 1 Hz in 22 Pa oxygen, the specular spot intensity shows three oscillations of unsteady period, and then decreases gradually. Clear laser pulse modulations can be resolved on the curve. Fitting the intensity recovery data after each single pulse by the expression 1 = I-0[1 - exp(-t/t(0))] results in an increasing diffusion time constant to. In contrast, t(0) for the homoepitaxial STO film is roughly constant. Meanwhile at comparable growth conditions, after the first dozens of laser pulses, the RHEED pattern shows 3D spots revealing a cubic-like structure with a lattice parameter similar to 4.3 angstrom, 10% larger than the a-axis of YBCO. We ascribe it to a perovskite-like structure with Y and Ba atoms randomly occupying the A-sites, due to the limitation of the materials available at the very beginning. Because of this layer, the epi-strain in the on-top-grown YBCO 123-structure is rather large, consequently the migration of YBCO adatoms on the surface is hindered, leading to a failure of the layer-by-layer growth mode. (C) 2012 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [11104159, 10904074]; Scientific Research Foundation of Nanjing University of Posts and Telecommunications, China [NY211008]; University Natural Science Research Foundation of Jiangsu Province, China [11KJA510002]; Key Lab of Broadband Wireless Communication and Sensor Network Technology (Nanjing University of Posts and Telecommunications) of Ministry of Education, China; Priority Academic Program Development Fund of Jiangsu Higher Education Institutions, China |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/36851]  |
| 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,Cheng, WW,et al. Efficient entanglement purification in quantum repeaters[J]. CHINESE PHYSICS B,2012,21(3). |
| APA | Sheng, YB,Zhou, L,Cheng, WW,Gong, LY,Zhao, SM,&Zheng, BY.(2012).Efficient entanglement purification in quantum repeaters.CHINESE PHYSICS B,21(3). |
| MLA | Sheng, YB,et al."Efficient entanglement purification in quantum repeaters".CHINESE PHYSICS B 21.3(2012). |
入库方式： OAI收割
来源：物理研究所
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