Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Entanglement Correlated Phase Changes in Quantum Games

Jiangfeng Du, Hui Li, Xiaodong Xu, Mingjun Shi, Xianyi Zhou, Rongdian Han

Published Nov 26, 2001• 5 citations
OpenAlex

Abstract

In one of our previous works we investigated the correlation between a quantum game and its entanglement. For the particular case of the Prisoners' Dilemma, the result shows that the game's property depends discontinuously on the amount of the entanglement. This discontinuity can be considered as phase changes with respect to the varying of the game's entanglement. In this paper, we reveal the correlation between the phase changes and the numerical values in the payoff matrix of the game. We find that if these numerical values satisfy some certain condition, the phase in which the game has two asymmetric Nash equilibria will disappear. Furthermore, the phase changes exhibits interesting variation with respect to the numerical values in the payoff matrix.

Related papers

Phase-transition-like behaviour of quantum games

Jiangfeng Du, Hui Li, Xiaodong Xu +2 more

The discontinuous dependence of the properties of a quantum game on its entanglement has been shown to be very much like phase transitions viewed in the entanglement-payoff diagram (J Du et al 2002 Phys. Rev. Lett. 88 137902). In this paper we investigate such phase-transition-like behaviour of quantum games, by suggesting a method which would help to illuminate the origin of such a kind of behaviour. For the particular case of the generalized Prisoners' Dilemma, we find that, for different settings of the numerical values in the payoff table, even though the classical game behaves the same, the quantum game exhibits different and interesting phase-transition-like behaviour.

Journal of Physics A Mathematical and General•May 28, 2003•78 citations

Phase-transition-like Behavior of Quantum Games

Jiangfeng Du, Hui Li, Xiaodong Xu +2 more

The discontinuous dependence of the properties of a quantum game on its entanglement has been shown up to be very much like phase transitions viewed in the entanglement-payoff diagram [J. Du et al., Phys. Rev. Lett, 88, 137902 (2002)]. In this paper we investigate such phase-transition-like behavior of quantum games, by suggesting a method which would help to illuminate the origin of such kind of behavior. For the particular case of the generalized Prisoners' Dilemma, we find that, for different settings of the numerical values in the payoff table, even though the classical game behaves the same, the quantum game exhibits different and interesting phase-transition-like behavior.

arXiv:quant-ph/0111138•Nov 26, 2001•3 citations

Phase Transitions in Quantum Games

Jiangfeng Du, Hui Li, Xiaodong Xu +2 more

The discontinuous dependence of the properties of a quantum game on its entanglement has been shown up as phase transitions [Phys. Rev. Lett, 88, 137902]. In this paper we explore this kind of phase transitions in quantum games and reveal the underlying physical foundations, using a method which is appropriate for the task here. For the generalized version of Prisoners' Dilemma, we find that, with different settings of the numerical values in the payoff table, even though the classical game behaves the same, the quantum game behaves greatly differently and exhibits novel features in view of phase transitions.

•Nov 26, 2001•0 citations

Agent-based modeling of quantum prisoner’s dilemma

Colin Benjamin, Rajdeep Tah

What happens when an infinite number of players play a quantum game? In this paper, we will answer this question by looking at the emergence of cooperation, in the presence of noise, in a one-shot quantum prisoner’s dilemma (QuPD). We will use the numerical agent-based model (ABM) and compare it with the analytical Nash equilibrium mapping (NEM) technique. To measure cooperation, we consider five indicators, i.e., game magnetization, entanglement susceptibility, correlation, player’s payoff average, and payoff capacity, respectively. In quantum social dilemmas, entanglement plays a non-trivial role in determining the behavior of the quantum players (or qubits) in the thermodynamic limit, and for QuPD, we consider the existence of bipartite entanglement between neighboring quantum players. For the five indicators in question, we observe first-order phase transitions at two entanglement values, and these phase transition points depend on the payoffs associated with the QuPD game. We numerically analyze and study the properties of both the quantum and the defect phases of the QuPD via the five indicators. The results of this paper demonstrate that both ABM and NEM, in conjunction with the chosen five indicators, provide insightful information on cooperative behavior in an infinite-player one-shot quantum prisoner’s dilemma.

arXiv:2404.02216•APL Quantum•Jan 6, 2025•3 citations

Noise effects in a three-player prisoner's dilemma quantum game

Muhammad Asif Ramzan, Majid Khan

We study the three-player prisoner's dilemma game under the effect of decoherence and correlated noise. It is seen that the quantum player is always better off than the classical players. It is also seen that the game's Nash equilibrium does not change in the presence of correlated noise in contradiction to the effect of decoherence in the multiplayer case. Furthermore, it is shown that for maximum correlation the game does not behave as a noiseless game and the quantum player is still better off for all values of the decoherence parameter p which is not possible in the two-player case. In addition, the payoffs reduction due to decoherence is controlled by the correlated noise throughout the course of the game.

arXiv:0901.2067•Journal of Physics A Mathematical and Theoretical•Sep 30, 2008•25 citations

How Quantum Prisoner’s Dilemma Can Support Negotiations

M. Szopa

Decision-making by the two negotiating parties is simulated by a prisoner's dilemma game.The game is formulated in a quantum manner, where players strategies are unitary transformations of qubits built over the basis of opposite decision options.Quantum strategies are correlated through the mechanism of quantum entanglement and the result of the game is obtained by the collapse of the resulting transformed state.The range of strategies allowed for quantum players is richer than in case of a classical game and therefore the result of the game can be better optimized.On the other hand, the quantum game is save against eavesdropping and the players can be assured that this type of quantum arbitration is fair.We show that quantum prisoner's dilemma has more favorable Nash equilibria than its classical analog and they are close to the Pareto optimal solutions.Some economical examples of utilizing quantum game Nash equilibria are proposed.

Optimum Economic Studies•Jan 1, 2014•6 citations
In one of our previous works we investigated the correlation between a quantum game and its entanglement. For the particular case of the Prisoners' Dilemma, the result shows that the game's property depends discontinuously on the amount of the entanglement. This discontinuity can be considered as phase changes with respect to the varying of the game's entanglement. In this paper, we reveal the correlation between the phase changes and the numerical values in the payoff matrix of the game. We find that if these numerical values satisfy some certain condition, the phase in which the game has two asymmetric Nash equilibria will disappear. Furthermore, the phase changes exhibits interesting variation with respect to the numerical values in the payoff matrix.
The discontinuous dependence of the properties of a quantum game on its entanglement has been shown to be very much like phase transitions viewed in the entanglement-payoff diagram (J Du et al 2002 Phys. Rev. Lett. 88 137902). In this paper we investigate such phase-transition-like behaviour of quantum games, by suggesting a method which would help to illuminate the origin of such a kind of behaviour. For the particular case of the generalized Prisoners' Dilemma, we find that, for different settings of the numerical values in the payoff table, even though the classical game behaves the same, the quantum game exhibits different and interesting phase-transition-like behaviour.
The discontinuous dependence of the properties of a quantum game on its entanglement has been shown up to be very much like phase transitions viewed in the entanglement-payoff diagram [J. Du et al., Phys. Rev. Lett, 88, 137902 (2002)]. In this paper we investigate such phase-transition-like behavior of quantum games, by suggesting a method which would help to illuminate the origin of such kind of behavior. For the particular case of the generalized Prisoners' Dilemma, we find that, for different settings of the numerical values in the payoff table, even though the classical game behaves the same, the quantum game exhibits different and interesting phase-transition-like behavior.
The discontinuous dependence of the properties of a quantum game on its entanglement has been shown up as phase transitions [Phys. Rev. Lett, 88, 137902]. In this paper we explore this kind of phase transitions in quantum games and reveal the underlying physical foundations, using a method which is appropriate for the task here. For the generalized version of Prisoners' Dilemma, we find that, with different settings of the numerical values in the payoff table, even though the classical game behaves the same, the quantum game behaves greatly differently and exhibits novel features in view of phase transitions.
What happens when an infinite number of players play a quantum game? In this paper, we will answer this question by looking at the emergence of cooperation, in the presence of noise, in a one-shot quantum prisoner’s dilemma (QuPD). We will use the numerical agent-based model (ABM) and compare it with the analytical Nash equilibrium mapping (NEM) technique. To measure cooperation, we consider five indicators, i.e., game magnetization, entanglement susceptibility, correlation, player’s payoff average, and payoff capacity, respectively. In quantum social dilemmas, entanglement plays a non-trivial role in determining the behavior of the quantum players (or qubits) in the thermodynamic limit, and for QuPD, we consider the existence of bipartite entanglement between neighboring quantum players. For the five indicators in question, we observe first-order phase transitions at two entanglement values, and these phase transition points depend on the payoffs associated with the QuPD game. We numerically analyze and study the properties of both the quantum and the defect phases of the QuPD via the five indicators. The results of this paper demonstrate that both ABM and NEM, in conjunction with the chosen five indicators, provide insightful information on cooperative behavior in an infinite-player one-shot quantum prisoner’s dilemma.
We study the three-player prisoner's dilemma game under the effect of decoherence and correlated noise. It is seen that the quantum player is always better off than the classical players. It is also seen that the game's Nash equilibrium does not change in the presence of correlated noise in contradiction to the effect of decoherence in the multiplayer case. Furthermore, it is shown that for maximum correlation the game does not behave as a noiseless game and the quantum player is still better off for all values of the decoherence parameter p which is not possible in the two-player case. In addition, the payoffs reduction due to decoherence is controlled by the correlated noise throughout the course of the game.
Decision-making by the two negotiating parties is simulated by a prisoner's dilemma game.The game is formulated in a quantum manner, where players strategies are unitary transformations of qubits built over the basis of opposite decision options.Quantum strategies are correlated through the mechanism of quantum entanglement and the result of the game is obtained by the collapse of the resulting transformed state.The range of strategies allowed for quantum players is richer than in case of a classical game and therefore the result of the game can be better optimized.On the other hand, the quantum game is save against eavesdropping and the players can be assured that this type of quantum arbitration is fair.We show that quantum prisoner's dilemma has more favorable Nash equilibria than its classical analog and they are close to the Pareto optimal solutions.Some economical examples of utilizing quantum game Nash equilibria are proposed.