Security of Distributed-Phase-Reference Quantum Key Distribution

被引：44

作者：

Moroder, Tobias ^{[1
]}

Curty, Marcos ^{[2
]}

Lim, Charles Ci Wen ^{[3
]}

Le Phuc Thinh ^{[4
]}

Zbinden, Hugo ^{[3
]}

Gisin, Nicolas ^{[3
]}

机构：

[1] Univ Siegen, Nat Wissensch Tech Fak, D-57068 Siegen, Germany

[2] Univ Vigo, Dept Signal Theory & Commun, EI Telecomunicac, E-36310 Vigo, Spain

[3] Univ Geneva, Appl Phys Grp, CH-1211 Geneva, Switzerland

[4] Natl Univ Singapore, Ctr Quantum Technol, Singapore 117543, Singapore

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 26期

基金：

新加坡国家研究基金会;

关键词：

CRYPTOGRAPHY; ATTACKS;

D O I：

10.1103/PhysRevLett.109.260501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Distributed-phase-reference quantum key distribution stands out for its easy implementation with present day technology. For many years, a full security proof of these schemes in a realistic setting has been elusive. We solve this long-standing problem and present a generic method to prove the security of such protocols against general attacks. To illustrate our result, we provide lower bounds on the key generation rate of a variant of the coherent-one-way quantum key distribution protocol. In contrast to standard predictions, it appears to scale quadratically with the system transmittance. DOI: 10.1103/PhysRevLett.109.260501

引用

页数：5

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