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Hacking commercial quantum cryptography systems by tailored bright illumination

金佳添加于 2010-11-4 18:21 | 3382 次阅读 | 0 个评论

作者
Lydersen L, Wiechers C, Wittmann C, Elser D, Skaar J, Makarov V
摘要
The peculiar properties of quantum mechanics allow two remote parties to communicate a private, secret key, which is protected from eavesdropping by the laws of physics1, 2, 3, 4. So-called quantum key distribution (QKD) implementations always rely on detectors to measure the relevant quantum property of single photons5. Here we demonstrate experimentally that the detectors in two commercially available QKD systems can be fully remote-controlled using specially tailored bright illumination. This makes it possible to tracelessly acquire the full secret key; we propose an eavesdropping apparatus built from off-the-shelf components. The loophole is likely to be present in most QKD systems using avalanche photodiodes to detect single photons. We believe that our findings are crucial for strengthening the security of practical QKD, by identifying and patching technological deficiencies.
详细资料
- 文献种类: Journal Article
- 期刊名称: Nature Photonics
- 期刊缩写: Nature Photon
- 期卷页: 2010年第4卷第10期 686-689页
- ISBN: 1749-4885
学科领域信息系统 » 理论信息学
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