Multipartite correlation degradation in amplitude-damping quantum channels
Josep Amengual i Batle, Ahmed Farouk, Majid Alkhambashi, S. Abdalla · Journal of the Korean Physical Society · 2017
Multipartite correlations, such as entanglement and non-locality, are considered when particles pass through a generalized amplitude-damping channel. Results for pure and mixed states for two qubits suggest that initial mixed states can still be considered provided that their degree of mixture is low enough. Also, the ensuing small values for non-locality suggest that instances involving more than three parties cannot easily be considered for practical purposes.