• DOI:10.1103/PhysRevLett.104.020504
Corpus ID: 29984499

Local unitary equivalence of multipartite pure states.

@article{Kraus2010LocalUE,
  title={Local unitary equivalence of multipartite pure states.},
  author={Barbara E. Kraus},
  journal={Physical review letters},
  year={2010},
  volume={104 2},
  pages={
          020504
        }
}

Barbara E. Kraus

Published 2010

Physics, Medicine

Physical review letters

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Necessary and sufficient conditions for the equivalence of arbitrary n-qubit pure quantum states under local unitary (LU) operations are derived. First, an easily computable standard form for multipartite states is introduced. Two generic states are shown to be LU equivalent iff their standard forms coincide. The LU-equivalence problem for nongeneric states is solved by presenting a systematic method to determine the LU operators (if they exist) which interconvert the two states.