Experimental 4-intensity decoy-state quantum key distribution with asymmetric basis-detector efficiency

Liu, Hui1,2,3; Yu, Zong-Wen4,5; Zou, Mi1,2,3; Tang, Yan-Lin6; Zhao, Yong6; Zhang, Jun1,2,3; Wang, Xiang-Bin4,7,8; Chen, Teng-Yun1,2,3; Pan, Jian-Wei1,2,3

2019-10-14

10.1103/PhysRevA.100.042313

PHYSICAL REVIEW A   影响因子和分区

2469-9926

2469-9934

The decoy-state method has been developed rapidly in quantum key distribution (QKD) since it is immune to photon-number splitting attacks. We examine two-basis-detector-efficiency asymmetry, which exists in realistic scenarios. By using the recent 4-intensity decoy-state optimization protocol, we report an implementation of high-rate QKD with asymmetric basis-detector efficiency, demonstrating a 1.9 to 33.2 times higher key rate than previous protocols in the situation of large basis-detector-efficiency asymmetry. The results ruled out an implicit assumption in QKD that the efficiency of Z basis and X basis are restricted to be the same. This work paves the way towards a morepractical QKD setting.

SCI ; EI

英语

通讯

Anhui Initiative in Quantum Information Technologies[WK2340000083]

Optics ; Physics

Optics ; Physics, Atomic, Molecular & Chemical

WOS:000489820000009

AMER PHYSICAL SOC

20194507634980

Efficiency ; Quantum theory

Production Engineering:913.1 ; Quantum Theory; Quantum Mechanics:931.4

PHYSICS

Web of Science

1.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China
2.Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China
3.Univ Sci & Technol China, CAS Ctr Excellence Quantum Informat & Quantum Phy, Hefei 230026, Anhui, Peoples R China
4.Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China
5.Data Commun Sci & Technol Res Inst, Beijing 100191, Peoples R China
6.QuantumCTek Corp Ltd, Hefei 230088, Anhui, Peoples R China
7.SAICT, Vinan Inst Quantum Technol, Jinan 250101, Shandong, Peoples R China
8.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China

Liu, Hui,Yu, Zong-Wen,Zou, Mi,et al. Experimental 4-intensity decoy-state quantum key distribution with asymmetric basis-detector efficiency[J]. PHYSICAL REVIEW A,2019,100(4).

Liu, Hui.,Yu, Zong-Wen.,Zou, Mi.,Tang, Yan-Lin.,Zhao, Yong.,...&Pan, Jian-Wei.(2019).Experimental 4-intensity decoy-state quantum key distribution with asymmetric basis-detector efficiency.PHYSICAL REVIEW A,100(4).

Liu, Hui,et al."Experimental 4-intensity decoy-state quantum key distribution with asymmetric basis-detector efficiency".PHYSICAL REVIEW A 100.4(2019).