.png){kind=icon}
返回
Tracking reference phase with a Kalman filter in continuous-variable quantum key distribution
.png){kind=icon}
OA
AI
DOI：10.1364/OE.399744.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
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. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Keyword:
CARRIER RECOVERY
NOISE
SECURITY
SIGNALS
期刊
IF:
3.3
论文数:
6.1W
被引数:
14.3W
机构
引用论文
Extended Kalman filtering for joint mitigation of phase and amplitude noise in coherent QAM systems.png)
OPTICS EXPRESS
OAAI
OPTICS EXPRESSIF3.3
OAAI分享收藏Practical security of the continuous-variable quantum key distribution with real local oscillators under phase attackOPTICS EXPRESSOAAI
OPTICS EXPRESSIF3.3
OAAI分享收藏Alkali-metal binding properties of simple ferrocenyl- and ruthenocenyl-substituted aza-crown ethers
PREAI
分享收藏Optimization of mechanochemical-assisted extraction of hesperidin from Pericarpium Citri ReticulataeOAAI
OAAI分享收藏Monitoring of continuous-variable quantum key distribution system in real environmentOPTICS EXPRESSOAAI
OPTICS EXPRESSIF3.3
OAAI分享收藏
查看更多内容