Finding optimal strategies for minimum-error quantum-state discrimination
- 19 June 2002
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 65 (6) , 060301
Abstract
We propose a numerical algorithm for finding optimal measurements for quantum-state discrimination. The theory of the semidefinite programming provides a simple check of the optimality of the numerically obtained results. With the help of our algorithm we calculate the minimum attainable error rate of a device discriminating between three particularly chosen pure qubit states.Keywords
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