Realignment separability criterion assisted with filtration for detecting continuous-variable entanglement

  title={Realignment separability criterion assisted with filtration for detecting continuous-variable entanglement},
  author={Anaelle Hertz and Matthieu Arnhem and Ali Asadian and Nicolas J. Cerf},
  journal={Physical Review A},
We introduce a weak form of the realignment separability criterion which is particularly suited to detect continuous-variable entanglement and is physically implementable (it requires linear optics transformations and homodyne detection). Moreover, we define a family of states, called Schmidt-symmetric states, for which the weak realignment criterion reduces to the original formulation of the realignment criterion, making it even more valuable as it is easily computable especially in higher… 

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