Measurement device-independent quantum key distribution with heralded pair coherent state

被引：15

作者：

Dong Chen ^{[1
,2
]}

Zhao Shang-Hong ^{[1
]}

Shi Lei ^{[1
]}

机构：

[1] Coll Informat & Nav, Xian 710077, Peoples R China

[2] Xian Commun Coll, Xian 710006, Peoples R China

来源：

QUANTUM INFORMATION PROCESSING | 2016年 / 15卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Measurement device-independent quantum key distribution; Weak coherent source; Heralded pair coherent state; CRYPTOGRAPHY; SECURITY;

D O I：

10.1007/s11128-016-1393-x

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The original measurement device-independent quantum key distribution is reviewed, and a modified protocol using heralded pair coherent state (HPCS) is proposed to overcome the quantum bit error rate associated with the dark count rate of the detectors in long-distance quantum key distribution. Our simulation indicates that the secure transmission distance can be improved evidently with HPCS owing to the lower probability of vacuum events when compared with weak coherent source scenario, while the secure key rate can be increased with HPCS due to the higher probability of single-photon events when compared with heralded single-photon source scenario. Furthermore, we apply the finite key analysis to the decoy state MDI-QKD with HPCS and obtain a practical key rate.

引用

页码：4253 / 4263

页数：11