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arXiv · 0812.2242

The Quantum Locker Puzzle

David Avis·Anne Broadbent
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Abstract

The locker puzzle is a game played by multiple players against a referee. It has been previously shown that the best strategy that exists cannot succeed with probability greater than 1-ln2 \approx 0.31, no matter how many players are involved. Our contribution is to show that quantum players can do much better--they can succeed with probability 1. By making the rules of the game significantly stricter, we show a scenario where the quantum players still succeed perfectly, while the classical players win with vanishing probability. Other variants of the locker puzzle are considered, as well as a cheating referee.

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David Avis, Anne Broadbent. 2008-12-11. The Quantum Locker Puzzle. https://doi.org/10.1109/icqnm.2009.13

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