Why We Should Be Serious About Games
Quantum game theory introduces fascinating scenarios known as pseudo-telepathy games, where two players can achieve higher success probabilities by using the laws of quantum mechanics rather than classical physics. More precisely, there exist games with a Perfect Quantum Strategy (PQS), strategies that guarantee a 100% success rate using quantum resources, even though no classical strategy can win with certainty. These quantum games are not just clever thought experiments: they serve as deep tests of quantum properties such as entanglement and contextuality, and they touch on some of the most profound questions in modern physics. Today, thanks to quantum computers, we can actually play such games from our laptops.