Experimental Quantum Advantage in the Odd-Cycle Game
We report the first experimental demonstration of the odd-cycle game. We entangle two atoms separated by ∼2 m, and the players use them to win the odd-cycle game with a probability ∼26σ 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.
Authors
- P. Drmota (ORCID: https://orcid.org/0000-0002-2241-885X)
- B. C. Nichol
- R. Srinivas (ORCID: https://orcid.org/0000-0002-8462-6072)
- A. Agrawal (ORCID: https://orcid.org/0000-0001-6200-9746)
- D. M. Lucas
- D. P. Nadlinger (ORCID: https://orcid.org/0000-0003-0219-274X)
- Adán Cabello (ORCID: https://orcid.org/0000-0002-4631-457X)
- E. M. Ainley (ORCID: https://orcid.org/0000-0001-5999-6314)
- D. Main (ORCID: https://orcid.org/0000-0001-8455-0859)
- G. Araneda (ORCID: https://orcid.org/0000-0002-1128-2571)
Institutions
- University of Oxford (GB)
- Universidad de Sevilla (ES)
Publication Details
- Journal
- Physical Review Letters
- Published
- 2025-02-21
- DOI
- https://doi.org/10.1103/physrevlett.134.070201
- Citations
- 3
- Primary Topic
- Quantum Mechanics and Applications
- Type
- article
- Field-Weighted Citation Impact
- 3.74
Funders
- Merton College, University of Oxford
- European Commission
- Ministerio de Ciencia e Innovación
- Engineering and Physical Sciences Research Council
- Wolfson College, University of Oxford
- Balliol College, University of Oxford
- Agencia Estatal de Investigación
- Army Research Office
- Sandia National Laboratories