Minimum error discrimination problem for pure qubit states
Source: Phys. Rev. A 80, 052305 (2009); doi:10.1103/PhysRevA.80.052305
Published 4 November 2009
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The necessary and sufficient conditions for minimization of the generalized rate error for discriminating among N pure qubit states are reformulated in terms of Bloch vectors representing the states. For the direct optimization problem, an algorithmic solution to these conditions is indicated. A solution to the inverse optimization problem is given. General results are widely illustrated by particular cases of equiprobable states and N=2,3,4 pure qubit states given with different prior probabilities.
©2009 The American Physical Society
| History: | Received 10 June 2009; published 4 November 2009 |
| Permalink: |
http://link.aps.org/abstract/PRA/v80/e052305 |
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