A game-theoretic probability approach to loopholes in CHSH experiments
By: Takara Nomura, Koichi Yamagata, Akio Fujiwara
We study the CHSH inequality from an informational, timing-sensitive viewpoint using game-theoretic probability, which avoids assuming an underlying probability space. The locality loophole and the measurement-dependence (``freedom-of-choice'') loophole are reformulated as structural constraints in a sequential hidden-variable game between Scientists and Nature. We construct a loopholes-closed game with capital processes that test (i) convergence of empirical conditional frequencies to the CHSH correlations and (ii) the absence of systematic correlations between measurement settings and Nature's hidden-variable assignments, and prove that Nature cannot satisfy both simultaneously: at least one capital process must diverge. This yields an operational winning strategy for Scientists and a game-theoretic probabilistic interpretation of experimentally observed CHSH violations.
Similar Papers
Beyond Hoeffding and Chernoff: Trading conclusiveness for advantages in quantum hypothesis testing
Quantum Physics
Lets computers guess better with a small chance of being unsure.
Nonlocal Games and Self-tests in the Presence of Noise
Quantum Physics
Tests quantum computers even when they make mistakes.
Quantum accessible information and classical entropy inequalities
Quantum Physics
Improves how computers understand quantum information.