Tracking reference phase with a Kalman filter in continuous-variable quantum key distribution
文献类型：期刊论文
| 作者 | HUANG, BIAO1,2,3,4; HUANG, YONGMEI1,3; PENG, ZHENMING2 |
| 刊名 | Optics Express
 |
| 出版日期 | 2020-09-01 |
| 卷号 | 28期号:19页码:28727-28739 |
| ISSN号 | 1094-4087 |
| DOI | 10.1364/OE.399744 |
| 文献子类 | 期刊论文 |
| 英文摘要 | The continuous-variable quantum key distribution with a local local-oscillator is extremely sensitive to the phase compensation noise caused by the inaccurate reference phase estimation. In order to overcome the influence of slow drift caused by the residual optical frequency difference, we utilize a vector Kalman filter to estimate and track the reference phase from pilots. The fast drift and slow drift are taken into account in the variation of the reference phase, so that phase estimation becomes more accurate than the conventional scalar Kalman filter. The mean square error of reference phase estimation is deduced theoretically, and the specified frame is designed to estimate the phase noise variance in real time. In simulations, the performances involving of the estimation accuracy, the actual excess noise and the secret key rate are compared between with four different phase estimation methods. The simulation results show that the vector Kalman filter is superior to the other methods, even though under a serious phase noise and a large optical frequency difference. © 2020 Optical Society of America. |
| 出版地 | WASHINGTON |
| WOS关键词 | CARRIER RECOVERY ; NOISE ; SECURITY ; SIGNALS |
| WOS研究方向 | Optics |
| 语种 | 英语 |
| WOS记录号 | WOS:000569207700120 |
| 出版者 | OPTICAL SOC AMER |
| 源URL | [http://ir.ioe.ac.cn/handle/181551/10112]  |
| 专题 | 光电技术研究所_光电工程总体研究室（一室） |
| 作者单位 | 1.University of Chinese, Academy of Sciences, Beijing; 100049, China; 2.University of Electronic Science and Technology of China, Chengdu; 610054, China; 3.Institute of Optics and Electronics Chinese, Academy of Sciences, Chengdu; 610209, China; 4.Southwest Communication Institute, Chengdu; 610041, China |
| 推荐引用方式 GB/T 7714 | HUANG, BIAO,HUANG, YONGMEI,PENG, ZHENMING. Tracking reference phase with a Kalman filter in continuous-variable quantum key distribution[J]. Optics Express,2020,28(19):28727-28739. |
| APA | HUANG, BIAO,HUANG, YONGMEI,&PENG, ZHENMING.(2020).Tracking reference phase with a Kalman filter in continuous-variable quantum key distribution.Optics Express,28(19),28727-28739. |
| MLA | HUANG, BIAO,et al."Tracking reference phase with a Kalman filter in continuous-variable quantum key distribution".Optics Express 28.19(2020):28727-28739. |
入库方式： OAI收割
来源：光电技术研究所
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