Unconditional security of the Bennett 1992 quantum key-distribution protocol over a lossy and noisy channel -: art. no. 032316

被引:57
|
作者
Tamaki, K [1 ]
Lütkenhaus, N
机构
[1] Grad Univ Adv Studies SOKENDAI, Kanagawa 2400193, Japan
[2] Univ Erlangen Nurnberg, Inst Theoret Phys 1, D-91058 Erlangen, Germany
[3] Univ Erlangen Nurnberg, Inst Opt Informat & Photon, Max Planck Res Grp, D-91058 Erlangen, Germany
来源
PHYSICAL REVIEW A | 2004年 / 69卷 / 03期
关键词
D O I
10.1103/PhysRevA.69.032316
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We show that the security proof of the Bennett 1992 protocol over loss-free channel given by Tamaki, Koashi, and Imoto [Phys. Rev. Lett. 90, 167904 (2003)] can be adapted to accommodate loss. We assumed that Bob's detectors discriminate between single-photon states on one hand and vacuum state or multiphoton states on the other hand.
引用
收藏
页码:032316 / 1
页数:5
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