Device-Independent Quantum Key Distribution Based on the Mermin-Peres Magic Square Game
arXiv:2308.14037 · doi:10.1103/PhysRevLett.131.080801
Abstract
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.
Numerical errors are corrected while main claims remain unchanged. 6+4 pages. Comments are welcome
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