Chefles, A. and Barnett, S.M. (1998) Quantum state separation, unambiguous discrimination and exact cloning. Journal of Physics A: Mathematical and Theoretical, 31 (50). pp. 10097-10103. ISSN 0305-4470Full text not available in this repository. (Request a copy from the Strathclyde author)
Unambiguous discrimination and exact cloning reduce the square-overlap between quantum states, exemplifying the more general type of procedure we term state separation. We obtain the maximum probability with which two equiprobable quantum states can be separated by an arbitrary degree, and find that the established bounds on the success probabilities for discrimination and cloning are special cases of this general bound. The latter also gives the maximum probability of successfully producing N exact copies of a quantum system whose state is chosen secretly from a known pair, given M initial realizations of the state, where N > M. We also discuss the relationship between this bound and that on unambiguous state discrimination.
|Keywords:||quantum state separation, exact cloning, physics, quantum states, Solid state physics. Nanoscience|
|Subjects:||Science > Physics > Solid state physics. Nanoscience|
Faculty of Science > Physics
|Depositing user:||Miss Darcy Spiller|
|Date Deposited:||18 Apr 2008|
|Last modified:||22 Jul 2016 02:07|