Relating Out-of-Time-Order Correlations to Entanglement via Multiple-Quantum Coherences.

@article{Grttner2018RelatingOC,
  title={Relating Out-of-Time-Order Correlations to Entanglement via Multiple-Quantum Coherences.},
  author={Martin G{\"a}rttner and Philipp Hauke and Ana Maria Rey},
  journal={Physical review letters},
  year={2018},
  volume={120 4},
  pages={
          040402
        }
}
Out-of-time-order correlations (OTOCs) characterize the scrambling, or delocalization, of quantum information over all the degrees of freedom of a system and thus have been proposed as a proxy for chaos in quantum systems. Recent experimental progress in measuring OTOCs calls for a more thorough understanding of how these quantities characterize complex quantum systems, most importantly in terms of the buildup of entanglement. Although a connection between OTOCs and entanglement entropy has… 
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