Finite-key analysis of high-dimensional time-energy entanglement-based quantum key distribution

被引：16

作者：

Lee, Catherine ^{[1
,2
]}

Mower, Jacob ^{[1
]}

Zhang, Zheshen ^{[1
]}

Shapiro, Jeffrey H. ^{[1
]}

Englund, Dirk ^{[1
]}

机构：

[1] MIT, Elect Res Lab, Cambridge, MA 02139 USA

[2] Columbia Univ, Dept Phys, New York, NY 10027 USA

来源：

QUANTUM INFORMATION PROCESSING | 2015年 / 14卷 / 03期

关键词：

Quantum key distribution; Entanglement; Secure communication; CRYPTOGRAPHY; SECURITY; PHOTONS;

D O I：

10.1007/s11128-014-0904-x

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a security analysis against collective attacks for a time-energy entanglement-based quantum key distribution protocol, given the practical constraints of single-photon detector efficiency, channel loss, and finite-key considerations. We find a positive secure-key capacity when the key length increases beyond for eight-dimensional systems. The minimum key length required is reduced by the ability to post-select on coincident single-photon detection events. Including finite-key effects, we show the ability to establish a shared secret key over a 200 km fiber link.

引用

页码：1005 / 1015

页数：11

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