Device-independent quantum key distribution (DIQKD) is information-theoretically secure against adversaries who possess a scalable quantum computer and who have supplied malicious key-establishment systems; however, the DIQKD key rate is currently too low. Consequently, we devise a DIQKD scheme based on the quantum nonlocal Mermin-Peres magic square game: our scheme asymptotically delivers DIQKD against collective attacks, even with noise. Our scheme outperforms DIQKD using the Clauser-Horne-Shimony-Holt game with respect to the number of game rounds, albeit not number of entangled pairs, provided that both state visibility and detection efficiency are high enough.
@article{arxiv.2308.14037,
title = {Device-Independent Quantum Key Distribution Based on the Mermin-Peres Magic Square Game},
author = {Yi-Zheng Zhen and Yingqiu Mao and Yu-Zhe Zhang and Feihu Xu and Barry C. Sanders},
journal= {arXiv preprint arXiv:2308.14037},
year = {2023}
}
Comments
Numerical errors are corrected while main claims remain unchanged. 6+4 pages. Comments are welcome