Abstract
© 2016 American Physical Society. We solve the long-standing problem of making n perfect clones from m copies of one of two known pure states with minimum failure probability in the general case where the known states have arbitrary a priori probabilities. The solution emerges from a geometric formulation of the problem. This formulation reveals that cloning converges to state discrimination followed by state preparation as the number of clones goes to infinity. The convergence exhibits a phenomenon analogous to a second-order symmetry-breaking phase transition.
Original language | English |
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Article number | 200401 |
Journal | Physical Review Letters |
Volume | 116 |
Issue number | 20 |
DOIs | |
Publication status | Published - 20 May 2016 |