Efficient quantum key distribution via single-photon two-qubit states

被引：10

作者：

Wang, Jin-Dong ^{[1
,2
]}

Wei, Zheng-Jun ^{[1
,2
]}

Zhang, Hui ^{[3
]}

Qin, Xiao-Juan ^{[4
]}

Liu, Xiao-Bao ^{[1
,2
]}

Zhang, Zhi-Ming ^{[1
,2
]}

Liao, Chang-Jun ^{[1
,2
]}

Liu, Song-Hao ^{[1
,2
]}

机构：

[1] S China Normal Univ, Lab Photon Informat Technol, SIPSE, Guangzhou 510006, Guangdong, Peoples R China

[2] S China Normal Univ, LQIT, Guangzhou 510006, Guangdong, Peoples R China

[3] Artillery Acad Peoples Liberat Army, Phys T&R Sect, Hefei 230031, Peoples R China

[4] Guangdong Radio & TV Univ, Guangzhou 510091, Guangdong, Peoples R China

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2010年 / 43卷 / 09期

关键词：

CRYPTOGRAPHY; SECURITY; PROOF;

D O I：

10.1088/0953-4075/43/9/095504

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a scheme for quantum key distribution, in which single photons are encoded with polarization states and then divided and delayed to encode phase differences between two sequential pulses. In an example, the BB84 and DPS (differential phase shift) protocols are combined to achieve single-photon two-qubit quantum key distribution. This scheme can increase the key generation efficiency up to 7/6, higher than that of the conventional single-photon one-qubit quantum key distribution scheme.

引用

页数：5

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