Experimental Quantum Advantage in the Odd-Cycle Game
Quantum Physics
2025-03-11 v2
Abstract
We report the first experimental demonstration of the odd-cycle game. We entangle two ions separated by ~2 m and the players use them to win the odd-cycle game with a probability ~26 sigma above that allowed by the best classical strategy. The experiment implements the optimal quantum strategy, is free of loopholes, and achieves 97.8(3) % of the theoretical limit to the quantum winning probability. We perform the associated Bell test and measure a nonlocal content of 0.54(2) -- the largest value for physically separate devices, free of the detection loophole, ever observed.
Keywords
Cite
@article{arxiv.2406.08412,
title = {Experimental Quantum Advantage in the Odd-Cycle Game},
author = {P. Drmota and D. Main and E. M. Ainley and A. Agrawal and G. Araneda and D. P. Nadlinger and B. C. Nichol and R. Srinivas and A. Cabello and D. M. Lucas},
journal= {arXiv preprint arXiv:2406.08412},
year = {2025}
}