Defeating Passive Eavesdropping with Quantum Illumination
Jeffrey H. Shapiro
TL;DR
This paper demonstrates that quantum illumination enables secure high-rate communication over long distances by significantly reducing the eavesdropper's success probability compared to legitimate users.
Contribution
It introduces a quantum illumination-based protocol that outperforms passive eavesdroppers in secure communication over fiber links.
Findings
Secure communication at 50 Mbit/s over 50 km fiber
Eavesdropper's error probability exceeds 0.28
Legitimate users achieve error probability less than 10^{-6}
Abstract
Quantum illumination permits Alice and Bob to communicate at 50 Mbit/s over 50 km of low-loss fiber with error probability less than 10^(-6) while the optimum passive eavesdropper's error probability must exceed 0.28.
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