Local indistinguishability: more nonlocality with less entanglement.

@article{Horodecki2003LocalIM,
  title={Local indistinguishability: more nonlocality with less entanglement.},
  author={Michał Horodecki and Aditi Sen and Ujjwal Sen and Karol Horodecki},
  journal={Physical review letters},
  year={2003},
  volume={90 4},
  pages={
          047902
        }
}
We provide a first operational method for checking local indistinguishability of orthogonal states. It originates from that in Ghosh et al. [Phys. Rev. Lett. 87, 5807 (2001)]], though we deal with pure states. Our method shows that probabilistic local distinguishing is possible for a complete multipartite orthogonal basis if and only if all vectors are product. Also, it leads to local indistinguishability of a set of orthogonal pure states of 3 multiply sign in circle 3, which shows that one… CONTINUE READING

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