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arXiv 1106.2675quant-phphysics.ins-det
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量子密码学中门控雪崩光电二极管对强光攻击的抵抗能力

Resilience of gated avalanche photodiodes against bright illumination attacks in quantum cryptography

Z. L. Yuan, J. F. Dynes, A. J. Shields

摘要:

在量子密钥分发中,半导体雪崩光电二极管(APD)通常用于单光子探测。最近,已经提出了许多使用明亮照明的攻击来操纵门控InGaAs APD。为了制定有效的应对措施,必须对这些攻击进行仔细分析,以区分不正确的操作和真正的漏洞。在这里,我们证明了正确操作的门控APD对连续波照明攻击具有免疫力,而监测光电流的过高值是针对使用时间定制光的攻击的直接对策。

英文摘要:

Semiconductor avalanche photodiodes (APDs) are commonly used for single photon detection in quantum key distribution. Recently, many attacks using bright illumination have been proposed to manipulate gated InGaAs APDs. In order to devise effective counter-measures, careful analysis of these attacks must be carried out to distinguish between incorrect operation and genuine loopholes. Here, we show that correctly-operated, gated APDs are immune to continuous-wave illumination attacks, while monitoring the photocurrent for anomalously high values is a straightforward counter-measure against attacks using temporally tailored light.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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