Sending-or-not-sending twin-field quantum key distribution with redundant space

Xu，Hai1,2; Hu，Xiao Long1,3; Jiang，Cong1,4; Yu，Zong Wen1,5; Wang，Xiang Bin1,2,4,6,7,8

2023-04-01

10.1103/PhysRevResearch.5.023069

Physical Review Research   影响因子和分区

2643-1564

2643-1564

We propose to adopt redundant space such as polarization mode in the sending-or-not-sending twin-field quantum key distribution (TF-QKD) in the Fock space. With the help of redundant space such as photon polarization, we can postselect events according to the outcome of the observation to the additional quantity. This compresses the bit-flip error rate in the postselected events of the SNS protocol. The calculation shows that the method using redundant space can greatly improve the performance in practical TF-QKD, especially when the total number of pulses is small.

ESCI ; EI

英语

其他

Ministration of Science and Technology of China through National Natural Science Foundation of China["11974204","12174215","12104184","12147107"] ; Open Research Fund Program of the State Key Laboratory of Low-Dimensional Quantum Physics[KF202110] ; Key R&D Plan of Shandong Province[2021ZDPT01]

Physics

Physics, Multidisciplinary

WOS:001011190500002

AMER PHYSICAL SOC

20231914075543

Algebra ; Bit error rate ; Polarization

Computer Programming:723.1 ; Algebra:921.1

2-s2.0-85158878721

Scopus

1.State Key Laboratory of Low Dimensional Quantum Physics,Department of Physics,Tsinghua University,Beijing,100084,China
2.Frontier Science Center for Quantum Information,Beijing,100084,China
3.School of Physics,State Key Laboratory of Optoelectronic Materials and Technologies,Sun Yat-sen University,Guangzhou,510275,China
4.Jinan Institute of Quantum Technology,SAICT,Jinan,250101,China
5.Data Communication Science and Technology Research Institute,Beijing,100191,China
6.Shanghai Branch,CAS Center for Excellence,Synergetic Innovation Center in Quantum Information and Quantum Physics,University of Science and Technology of China,Shanghai,201315,China
7.Shenzhen Institute for Quantum Science and Engineering,Physics Department,Southern University of Science and Technology,Shenzhen,518055,China
8.Center for Atomic and Molecular Nanosciences,Tsinghua University,Beijing,100084,China

Xu，Hai,Hu，Xiao Long,Jiang，Cong,et al. Sending-or-not-sending twin-field quantum key distribution with redundant space[J]. Physical Review Research,2023,5(2).

Xu，Hai,Hu，Xiao Long,Jiang，Cong,Yu，Zong Wen,&Wang，Xiang Bin.(2023).Sending-or-not-sending twin-field quantum key distribution with redundant space.Physical Review Research,5(2).

Xu，Hai,et al."Sending-or-not-sending twin-field quantum key distribution with redundant space".Physical Review Research 5.2(2023).