Measure-resend authenticated semi-quantum key distribution with single photons
This is an incremental improvement for secure quantum communication systems.
The authors tackled the problem of authenticated semi-quantum key distribution by proposing a new measure-resend protocol that reduces quantum resource burden, requires fewer pre-shared key bits, and improves qubit efficiency compared to prior work, with security proven robust against collective attacks.
Yu et al. and Li et al. have proposed the measure-resend protocols of authenticated semi-quantum key distribution (ASQKD). A new measure-resend ASQKD protocol is proposed in this paper, which requires a lower burden of quantum resource, needs fewer bits of the pre-shared key, and even provides better qubit efficiency than their protocols. The security proof shows the robustness of the proposed protocol under the collective attack.