| 基于两种光源的诱发态量子密钥分配性能分析 |
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| 引用本文： | 王涵,闫连山,潘炜,罗斌,郭振,徐明峰.基于两种光源的诱发态量子密钥分配性能分析[J].物理学报,2011,60(3):30304-030304. |
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| 作者姓名： | 王涵 闫连山 潘炜 罗斌 郭振 徐明峰 |
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| 作者单位： | 西南交通大学信息科学与技术学院信息光子与通信研究中心,成都 610031 |
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| 基金项目： | 国家自然科学基金(批准号:60972003)和教育部新世纪优秀人才资助项目(批准号:NCET-08-0821)资助的课题. |
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| 摘 要： | 单光子的衰减特性及其易受干扰的缺点限制了纯单光子量子系统的传输码率及距离.弱相干光脉冲(WCP)光源和准单光子源(HSPS)则具有更高的实用价值.本文将这两种光源和诱发态方案相结合并采用Lütkenhaus和Gottesman-Lo- Lütkenhaus-Preskill (GLLP)两种数据后处理方法进行性能分析.仿真结果表明:HSPS在传输距离上要优于WCP,对应相同传输距离时系统量子误码率(QBER)要小些,但相对密钥生成率低.
关键词：
量子密钥分配
诱发态
WCP光源
HSPS光源
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| 关 键 词： | 量子密钥分配 诱发态 WCP光源 HSPS光源 |
| 收稿时间： | 2010-01-30 |
Performance analysis of decoy state quantum key distribution using two kinds of photon sources |
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| Wang Han,Yan Lian-Shan,Pan Wei,Luo Bin,Guo Zhen,Xu Ming-Feng.Performance analysis of decoy state quantum key distribution using two kinds of photon sources[J].Acta Physica Sinica,2011,60(3):30304-030304. |
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| Authors: | Wang Han Yan Lian-Shan Pan Wei Luo Bin Guo Zhen Xu Ming-Feng |
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| Institution: | Center for Information Photonics and Communications, School of Information Science and Technology, Southwest Jiaotong University ,Chengdu 610031, China;Center for Information Photonics and Communications, School of Information Science and Technology, Southwest Jiaotong University ,Chengdu 610031, China;Center for Information Photonics and Communications, School of Information Science and Technology, Southwest Jiaotong University ,Chengdu 610031, China;Center for Information Photonics and Communications, School of Information Science and Technology, Southwest Jiaotong University ,Chengdu 610031, China;Center for Information Photonics and Communications, School of Information Science and Technology, Southwest Jiaotong University ,Chengdu 610031, China;Center for Information Photonics and Communications, School of Information Science and Technology, Southwest Jiaotong University ,Chengdu 610031, China |
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| Abstract: | Since the single photon is easy to attenuate and be disturbed, its key generation rate and transmission distance in quantum communication systems are generally limited. In contrast, weak coherent pulse (WCP) and heralded single photon source (HSPS) exhibit higher feasibility than the single photon source in quantum key distributions (QKD). We compare the performances of QKD using these two kinds of photon sources and decoy state method, incorporating data-postprocessing methods including the Lütkenhaus scheme and Gottesman-Lo-Lütkenhaus- Preskill (GLLP) scheme. Simulation results indicate that QKD using HSPS can transmit longer distance than using WCP with lower overall quantum bit error rate (QBER) at the same transmission distance, albeit with relatively low key generation rate. |
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| Keywords: | quantum key distribution decoy state weak coherent pulse heralded single photon source |
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