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Updated: Jan 8, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

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Teoría macroscópica de correlaciones multipartitas en sistemas cuánticos abiertos invariantes por permutación

Krzysztof Ptaszyński^1,2, Maciej Chudak¹, Massimiliano Esposito²

¹Institute of Molecular Physics, Polish Academy of Sciences, Mariana Smoluchowskiego 17, 60-179 Poznań, Poland.

Physical review. E

|December 23, 2025

Abstract:

Information-theoretic quantities have received significant attention as system-independent measures of correlations in many-body quantum systems, e.g., as universal order parameters of synchronization. In this work, we present a method to determine the macroscopic behavior of the steady-state multipartite mutual information between N interacting units undergoing Markovian evolution that is invariant under unit permutations. Using this approach, we extend a conclusion previously drawn for classical systems that either the extensive scaling of mutual information is not possible for systems relaxing to fixed points of the mean-field dynamics, or such scaling is not robust to perturbations of system dynamics. In contrast, robust extensive scaling occurs for a system relaxing to time-dependent attractors, e.g., limit cycles. We illustrate the applicability of our method on the driven-dissipative Lipkin-Meshkov-Glick model.

Palabras clave:

información mutua sistemas cuánticos abiertos dinámica de muchos cuerpos escalado extensivo atractores dependientes del tiempo puntos fijos sincronización cuántica transiciones de fase cuántica

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