Least Square Algorithm for Phase Estimation in Continuous-Variable Quantum Key Distribution

Biao Huang; Tiantian Ma; Yongmei Huang; Zhenming Peng

doi:10.3788/LOP202158.1127001

Laser & Optoelectronics Progress, Volume. 58, Issue 11, 1127001(2021)

Least Square Algorithm for Phase Estimation in Continuous-Variable Quantum Key Distribution

Biao Huang^1,2,3,4, Tiantian Ma⁴, Yongmei Huang^1,3、*, and Zhenming Peng²

¹Key Laboratory of Optical Engineering, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu , Sichuan 610209, China

²School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu , Sichuan 610054, China

³University of Chinese Academy of Sciences, Beijing 100049, China

⁴Department of Basic Platform, Southwest Communication Institute, Chengdu , Sichuan 610041, China

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Figures & Tables(4)

Fig. 1. Schematic of LLO-CVQKD model based on pilot-delay design

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Fig. 2. Mean square error versus block length

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Fig. 3. Comparison of estimation performances of different reference phase estimation algorithms. (a) Estimated results of phase drifts; (b) real-time statistical results of mean square errors

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Fig. 4. Secret key rate of LLO-CVQKD system

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Biao Huang, Tiantian Ma, Yongmei Huang, Zhenming Peng. Least Square Algorithm for Phase Estimation in Continuous-Variable Quantum Key Distribution[J]. Laser & Optoelectronics Progress, 2021, 58(11): 1127001

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Paper Information

Category: Quantum Optics

Received: Nov. 5, 2020

Accepted: Dec. 2, 2020

Published Online: Jun. 7, 2021

The Author Email: Yongmei Huang (huangym@ioe.ac.cn)

DOI:10.3788/LOP202158.1127001

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology