Highly Efficient Quantum Key Distribution Immune to All Detector Attacks
Abstract
Vulnerabilities and imperfections of single-photon detectors have been shown to compromise security for quantum key distribution (QKD). The measurement-device-independent QKD (MDI-QKD) appears to be the most appealing solution to solve the issues. However, in practice one faces severe obstacles of having significantly lower key generation rate, difficult two photon interferences, and remote synchronization etc. In this letter, we propose a highly efficient and simple quantum key distribution scheme to remove all of these drawbacks. Our proposal can be implemented with only small modifications over the standard decoy BB84 system. Remarkably it enjoys both the advantages of high key generation rate (being almost two orders of magnitude higher than that based on conventional MDI-QKD) comparable to the normal decoy system, and security against any detector side channel attacks. Most favorably one can achieve complete Bell state measurements with resort to single photon interference, which reduces significantly experimental costs. Our approach enables utilization of high speed and efficient secure communication, particularly in real-life scenario of both metropolitan and intercity QKD network, with an attack free fashion from arbitrary detector side channels.
Cite
@article{arxiv.1410.2928,
title = {Highly Efficient Quantum Key Distribution Immune to All Detector Attacks},
author = {Wen-Fei Cao and Yi-Zheng Zhen and Yu-Lin Zheng and Zeng-Bing Chen and Nai-Le Liu and Kai Chen and Jian-Wei Pan},
journal= {arXiv preprint arXiv:1410.2928},
year = {2016}
}
Comments
We thank all the colleagues in the quantum communication community for very valuable comments, insights sharing and discussions. Our scheme is insecure if one does not have trusted monitors and careful post data processing, which reduces largely its practical applications. Therefore we decide to withdraw this manuscript. Thank you all for understanding