2007
DOI: 10.1016/j.physleta.2006.10.007
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Coalitions in the quantum Minority game: Classical cheats and quantum bullies

Abstract: In a one-off Minority game, when a group of players agree to collaborate they gain an advantage over the remaining players. We consider the advantage obtained in a quantum Minority game by a coalition sharing an initially entangled state versus that obtained by a coalition that uses classical communication to arrive at an optimal group strategy. In a model of the quantum Minority game where the final measurement basis is randomized, quantum coalitions outperform classical ones when carried out by up to four pl… Show more

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Cited by 23 publications
(14 citation statements)
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“…The usual approach in three-player quantum games considers players sharing a three-qubit quantum state with each player accessing their respective qubit in order to perform local unitary transformation. Quantum games have been reported [15] in which players share Greenberger-Horne-Zeilinger (GHZ) states and the W states [5], while other works have, for instance, investigated the effects of noise [16,17] and the benefits of players forming coalitions [18,19].…”
Section: Introductionmentioning
confidence: 99%
“…The usual approach in three-player quantum games considers players sharing a three-qubit quantum state with each player accessing their respective qubit in order to perform local unitary transformation. Quantum games have been reported [15] in which players share Greenberger-Horne-Zeilinger (GHZ) states and the W states [5], while other works have, for instance, investigated the effects of noise [16,17] and the benefits of players forming coalitions [18,19].…”
Section: Introductionmentioning
confidence: 99%
“…Although playing a game using entanglement as a resource is not the same as playing the underlying classical game, sharing entanglement is less strong than explicit cooperation. In quantum versions of the Minority game [20][21][22][23], for even numbers of players it has been shown [20,21] that the probability of getting no winners in the final state can be reduced, to the benefit of all players. For small numbers of players the QMG is amenable to experimental implementation using multi-photon entangled states [4].…”
Section: Introductionmentioning
confidence: 99%
“…Flitney and Greentree consider the advantage obtained in a quantum minority game by a coalition sharing an initially entangled state versus that obtained by a coalition that uses classical communication to reach an optimal group strategy. Their result shows that quantum coalitions outperform classical ones when carried out by up to four players [22] . Flitney et al show that, for a continuous set of entangled four-partite states, the task of maximizing the payoff in the symmetric strategy four-player quantum minority game is equivalent to maximizing the violation of a four-particle Bell inequality [23] .…”
Section: A the Main Classical Game Models And Its Quantum Counterpartmentioning
confidence: 99%