Unambiguous pure-state identification without classical knowledge

  title={Unambiguous pure-state identification without classical knowledge},
  author={Akihisa Hayashi and Minoru Horibe and Takaaki Hashimoto},
We study how to unambiguously identify a given quantum pure state with one of the two reference pure states when no classical knowledge on the reference states is given but a certain number of copies of each reference quantum state are presented. By unambiguous identification, we mean that we are not allowed to make a mistake but our measurement can produce an inconclusive result. Assuming the two reference states are independently distributed over the whole pure state space in a unitary… CONTINUE READING