Measurement-device-independent quantum key distribution (MDIQKD) is proposed to be secure against any possible detection attacks. The security of the original proposal relies on the assumption that the legitimate users can fully characterize the encoding systems including sources. Here, we propose a MDIQKD protocol where we allow uncharacterized encoding systems as long as qubit sources are used. A security proof of the MDIQKD protocol is presented that does not need the knowledge of the encoding states. Simulation results show that the scheme is practical.
@article{arxiv.1309.3819,
title = {Measurement-device-independent quantum key distribution with uncharacterized qubit sources},
author = {Zhen-Qiang Yin and Chi-Hang Fred Fung and Xiongfeng Ma and Chun-Mei Zhang and Hong-Wei Li and Wei Chen and Shuang Wang and Guang-Can Guo and Zheng-Fu Han},
journal= {arXiv preprint arXiv:1309.3819},
year = {2013}
}