Measurement-device-independent quantum key distribution (MDI-QKD) protocol was proposed to remove all the detector side channel attacks, while its security relies on the trusted encoding systems. Here we propose a one-sided MDI-QKD (1SMDI-QKD) protocol, which enjoys detection loophole-free advantage, and at the same time weakens the state preparation assumption in MDI-QKD. The 1SMDI-QKD can be regarded as a modified MDI-QKD, in which Bob's encoding system is trusted, while Alice's is uncharacterized. For the practical implementation, we also provide a scheme by utilizing coherent light source with an analytical two decoy state estimation method. Simulation with realistic experimental parameters shows that the protocol has a promising performance, and thus can be applied to practical QKD applications.
@article{arxiv.1704.04371,
title = {One-sided Measurement-Device-Independent Quantum Key Distribution},
author = {Wen-Fei Cao and Yi-Zheng Zhen and Yu-Lin Zheng and Li Li and Zeng-Bing Chen and Nai-Le Liu and Kai Chen},
journal= {arXiv preprint arXiv:1704.04371},
year = {2018}
}