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| 学术报告：Quantum cryptography: from theory to practice |
| 2008-06-19 | 编辑：蔡怡春 | 【大 中 小】【打印】【关闭】 |
Quantum cryptography: from theory to practice
Xiongfeng Ma
University of Toronto
IQC, University of Waterloo
In this talk, I will summarize the research work done in my Ph.D. program from 2003 to 2008 at University of Toronto. In theory, quantum key distribution (QKD) protocols have been proven to be secure. In the first part, I will give an overview of security proofs with a special emphasis on decoy state QKD. I will start from the security proof of decoy state QKD, then discuss various practical protocols, and also talk about some experiment demonstrations. On the other hand, the security of practical QKD implementations may still be questionable. This is because all the security proofs are based on particular QKD models, which may not completely hold in practice. In the second part of this talk, I will introduce some attacks on realistic systems exploiting practical imperfections, such as time-shift attack.
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