| Experimental demonstration of a coherent detector blinding attack on a real CV-QKD system
System
- Daniel Pereira, Vana Pezelj, Florian Prawits, Hannes Hübel
- 2026
Abstract
<p>The authors present a novel implementation of a coherent detector blinding attack against a complete CV-QKD receiver, in which the eavesdropper hinders the receiver's ability to estimate the channel parameters and so hides the impact of a collective attack. Excess noise in excess of 2.5 SNU is reliably hidden. The paper also reports that an AC-coupled balanced detector defeats the naive constant-signal form of the attack but not a modulated one, and proposes countermeasures based on monitoring the receiver output.</p>
Techniques
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