Robustness of two-way quantum communication protocols against Trojan horse attack

Abstract

We discuss the robustness of two-way quantum communication protocols against Trojan horse attack and introduce a novel attack, delay-photon Trojan horse attack. Moreover, we present a practical way for two-way quantum communication protocols to prevent the eavesdropper from stealing the information transmitted with Trojan horse attacks. It means that two-way quantum communication protocols is also secure in a practical application.

3 pages, no figure. Comments and helps are welcome to [email protected]

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