排序方式: 共有4条查询结果,搜索用时 13 毫秒
1
1.
Secret Key Distillation for Continuous Variable Quantum Key Distribution against Gaussian Classical Eve 下载免费PDF全文
The continuous variable quantum key distribution is expected to provide high secret key rate without single photon source and detector, while the lack of the effective key distillation method makes it unpractical under the high loss condition. Here we present a single-bit-reverse-reconciliation protocol against Oaussian classical Eve, which can distill the secret key through practical imperfect error correction with high efficiency. The simulation results show that this protocol can distill secret keys even when the transmission fibre is longer than 150 km, which may make the continuous variable scheme to outvie the single photon one. 相似文献
2.
3.
4.
A Security Proof of Measurement Device Independent Quantum Key Distribution: From the View of Information Theory 总被引:1,自引:0,他引:1 下载免费PDF全文
Although some ideal quantum key distribution protocols have been proved to be secure, there have been some demonstrations that practical quantum key distribution implementations were hacked due to some real-life imperfections. Among these attacks, detector side channel attacks may be the most serious. Recently, a measurement device independent quantum key distribution protocol [Phys. Rev. Lett. 108 (2012) 130503] was proposed and all detector side channel attacks are removed in this scheme. Here a new security proof based on quantum information theory is given. The eavesdropper's information of the sifted key bits is bounded. Then with this bound, the final secure key bit rate can be obtained. 相似文献
1