Optimised quantum hacking of superconducting nanowire single-photon detectors.
Optimised quantum hacking of superconducting nanowire single-photon detectors.
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DOI：
10.1364/oe.22.006734
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发表时间：
2013-05
期刊：
影响因子：
3.8
通讯作者：
M. G. Tanner;V. Makarov;R. Hadfield
中科院分区：
文献类型：
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作者：
M. G. Tanner;V. Makarov;R. Hadfield
我们探讨了明亮的光控制超导纳米线单光子探测器（SNSPD）在分流配置（一个实用的措施，以避免闭锁）。在实验中，我们模拟了在黑客攻击下，SNSPD在一个典型的量子密钥分发系统中会收到的光照模式。我们表明，它有效地百叶窗和控制SNSPD。短暂的致盲照明持续几分之一微秒，并在此期间产生几个确定性的假点击。这种攻击不会导致欺骗输出脉冲中的定时抖动升高，因此不会引入显著的误差。测试了五种不同的SNSPD芯片设计。我们考虑了应对这次袭击的可能对策。
We explore bright-light control of superconducting nanowire single-photon detectors (SNSPDs) in the shunted configuration (a practical measure to avoid latching). In an experiment, we simulate an illumination pattern the SNSPD would receive in a typical quantum key distribution system under hacking attack. We show that it effectively blinds and controls the SNSPD. The transient blinding illumination lasts for a fraction of a microsecond and produces several deterministic fake clicks during this time. This attack does not lead to elevated timing jitter in the spoofed output pulse, and hence does not introduce significant errors. Five different SNSPD chip designs were tested. We consider possible countermeasures to this attack.