Locally indistinguishable subspaces spanned by three-qubit unextendible product bases

@article{Duan2007LocallyIS,
  title={Locally indistinguishable subspaces spanned by three-qubit unextendible product bases},
  author={R. Duan and Yu Xin and M. Ying},
  journal={Physical Review A},
  year={2007},
  volume={81},
  pages={032329}
}
We study the local distinguishability of general multiqubit states and show that local projective measurements and classical communication are as powerful as the most general local measurements and classical communication. Remarkably, this indicates that the local distinguishability of multiqubit states can be decided efficiently. Another useful consequence is that a set of orthogonal $n$-qubit states is locally distinguishable only if the summation of their orthogonal Schmidt numbers is less… Expand
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