Classical synchronization indicates persistent entanglement in isolated quantum systems

Dirk Witthaut (), Sandro Wimberger, Raffaella Burioni and Marc Timme
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Dirk Witthaut: Forschungszentrum Jülich, Institute for Energy and Climate Research (IEK-STE)
Sandro Wimberger: Fisiche ed Informatiche, Universitá di Parma
Raffaella Burioni: Fisiche ed Informatiche, Universitá di Parma
Marc Timme: Network Dynamics, Max Planck Institute for Dynamics and Self-Organization (MPIDS), Am Faßberg

Nature Communications, 2017, vol. 8, issue 1, 1-7

Abstract: 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.

Date: 2017
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DOI: 10.1038/ncomms14829

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