Design and experimental performance of local entanglement witness operators

  title={Design and experimental performance of local entanglement witness operators},
  author={David Amaro and Markus P. M{\"u}ller},
  journal={Physical Review A},
Entanglement is a central concept in quantum information and a key resource for many quantum protocols. In this work we propose and analyze a class of entanglement witnesses that detect the presence of entanglement in subsystems of experimental multi-qubit stabilizer states. The witnesses we propose can be decomposed into sums of Pauli operators and can be efficiently evaluated by either two measurement settings only or at most a number of measurements that only depends on the size of the… 

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