Hedging bets with correlated quantum strategies

TL;DR

This paper explores how quantum correlations enable a form of perfect hedging in game-theoretic tests, surpassing classical limitations and demonstrating non-classical, quantum-specific behaviors.

Contribution

It introduces a quantum information theoretic framework showing non-classical correlations enable perfect hedging in interactive tests, unlike classical scenarios.

Findings

Quantum correlations exhibit non-classical behavior.

Perfect hedging is possible with quantum strategies.

Classical variants do not allow perfect hedging.

Abstract

This paper studies correlations among independently administered hypothetical tests of a simple interactive type, and demonstrates that correlations arising in quantum information theoretic variants of these tests can exhibit a striking non-classical behavior. When viewed in a game-theoretic setting, these correlations are suggestive of a perfect form of hedging, where the risk of a loss in one game of chance is perfectly offset by one's actions in a second game. This type of perfect hedging is quantum in nature: it is not possible in classical variants of the tests we consider.