Higher key rate of measurement-device-independent quantum key distribution through joint data processing

Jiang, Cong1; Yu, Zong-Wen2,3; Hu, Xiao-Long2; Wang, Xiang-Bin1,2,4,5,6

2021-01-08

10.1103/PhysRevA.103.012402

PHYSICAL REVIEW A   影响因子和分区

2469-9926

2469-9934

We propose a method named as double-scanning method to improve the key rate of measurement-device-independent quantum key distribution (MDI-QKD) drastically. In the method, two parameters are scanned simultaneously to tightly estimate the counts of single-photon pairs and the phase-flip error rate jointly. Numerical results show that the method in this work can improve the key rate by 35%-280% in a typical experimental setup. Besides, we study the optimization of MDI-QKD protocol with all parameters including the source parameters and failure probability parameters, over symmetric channel or asymmetric channel. Compared with the optimized results with only the source parameters, the all-parameter-optimization method could improve the key rate by about 10%.

SCI ; EI

英语

通讯

Ministry of Science and Technology of China through National Key Research and Development Program of China[2017YFA0303901] ; National Natural Science Foundation of China[11474182,11774198,11974204,"U1738142",61801126] ; Natural Science Foundation of Shandong Province[ZR2019LLZ004]

Optics ; Physics

Optics ; Physics, Atomic, Molecular & Chemical

WOS:000607476000003

AMER PHYSICAL SOC

20210209764729

Data handling ; Numerical methods ; Particle beams

Data Processing and Image Processing:723.2 ; Numerical Methods:921.6 ; High Energy Physics:932.1

PHYSICS

Web of Science

1.SAICT, Jinan Inst Quantum Technol, Jinan 250101, Peoples R China
2.Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China
3.Data Commun Sci & Technol Res Inst, Beijing 100191, Peoples R China
4.Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China
5.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China
6.Southern Univ Sci & Technol, Phys Dept, Shenzhen 518055, Peoples R China

Jiang, Cong,Yu, Zong-Wen,Hu, Xiao-Long,et al. Higher key rate of measurement-device-independent quantum key distribution through joint data processing[J]. PHYSICAL REVIEW A,2021,103(1).

Jiang, Cong,Yu, Zong-Wen,Hu, Xiao-Long,&Wang, Xiang-Bin.(2021).Higher key rate of measurement-device-independent quantum key distribution through joint data processing.PHYSICAL REVIEW A,103(1).

Jiang, Cong,et al."Higher key rate of measurement-device-independent quantum key distribution through joint data processing".PHYSICAL REVIEW A 103.1(2021).