Spatial entanglement of bosons in optical lattices.

@article{Cramer2013SpatialEO,
  title={Spatial entanglement of bosons in optical lattices.},
  author={Marcus Cramer and Alain Bernard and Nicole Fabbri and Leonardo Fallani and Chiara Fort and Sara Rosi and Filippo Caruso and M. Inguscio and Martin Bodo Plenio},
  journal={Nature communications},
  year={2013},
  volume={4},
  pages={
          2161
        }
}
Entanglement is a fundamental resource for quantum information processing, occurring naturally in many-body systems at low temperatures. The presence of entanglement and, in particular, its scaling with the size of system partitions underlies the complexity of quantum many-body states. The quantitative estimation of entanglement in many-body systems represents a major challenge, as it requires either full-state tomography, scaling exponentially in the system size, or the assumption of… 

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