Entanglement certification from theory to experiment

  title={Entanglement certification from theory to experiment},
  author={Nicolai Friis and Giuseppe Vitagliano and Mehul Malik and Marcus Huber},
  journal={Nature Reviews Physics},
Entanglement is an important resource for quantum technologies. There are many ways quantum systems can be entangled, ranging from the two-qubit case to entanglement in high dimensions or between many parties. Consequently, many entanglement quantifiers and classifiers exist, corresponding to different operational paradigms and mathematical techniques. However, for most quantum systems, exactly quantifying the amount of entanglement is extremely demanding, if at all possible. Furthermore, it is… 

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