title: Classical synchronization indicates persistent entanglement in isolated quantum systems.
abstract: Synchronization and entanglement constitute fundamental collective phenomena in multi-unit classical and quantum systems, respectively, both equally implying coordinated system states. Here, we present a direct link for a class of isolated quantum many-body systems, demonstrating that synchronization emerges as an intrinsic system feature. Intriguingly, quantum coherence and entanglement arise persistently through the same transition as synchronization. This direct link between classical and quantum cooperative phenomena may further our understanding of strongly correlated quantum systems and can be readily observed in state-of-the-art experiments, for example, with ultracold atoms.
authors.affiliation: Forschungszentrum Jülich, Institute for Energy and Climate Research (IEK-STE), 52428 Jülich, Germany.|Institute for Theoretical Physics, University of Cologne, Zuelpicher Str. 77, 50937 Köln, Germany.|Network Dynamics, Max Planck Institute for Dynamics and Self-Organization (MPIDS), Am Faßberg, 37077 Göttingen, Germany.
authors.forename: Dirk
authors.identifier: 0000-0002-3623-5341
authors.initials: D
authors.lastname: Witthaut
authors.affiliation: Dipartimento di Scienze Matematiche, Fisiche ed Informatiche, Universitá di Parma, Via G.P. Usberti 7/a, 43124 Parma, Italy.|INFN, Sezione di Milano Bicocca, Gruppo Collegato di Parma, Parco Area delle Scienze, 7/A, 43124 Parma, Italy.
authors.forename: Sandro
authors.identifier: 0000-0002-8433-1733
authors.initials: S
authors.lastname: Wimberger
authors.affiliation: Dipartimento di Scienze Matematiche, Fisiche ed Informatiche, Universitá di Parma, Via G.P. Usberti 7/a, 43124 Parma, Italy.|INFN, Sezione di Milano Bicocca, Gruppo Collegato di Parma, Parco Area delle Scienze, 7/A, 43124 Parma, Italy.
authors.forename: Raffaella
authors.initials: R
authors.lastname: Burioni
authors.affiliation: Network Dynamics, Max Planck Institute for Dynamics and Self-Organization (MPIDS), Am Faßberg, 37077 Göttingen, Germany.|Department of Physics, University of Darmstadt, 64289 Darmstadt, Germany.|Institute for Theoretical Physics, Technical University of Dresden, 01062 Dresden, Germany.
authors.forename: Marc
authors.initials: M
authors.lastname: Timme