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Results in optimal discrimination

Hunter, Kieran (2004) Results in optimal discrimination. American Institute of Physics Conference Proceedings, 734 (83). pp. 83-86. ISSN 0094-243X

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Official URL: https://doi.org/10.1063/1.1834388

Abstract

We study the problem of discriminating between non-orthogonal quantum states with least probability of error. We demonstrate that this problem can be simplified if we solve for the error itself rather than solving directly for the optimal measurement. This method enables us to derive solutions directly and thus make definite statements about the uniqueness of an optimal strategy. This approach immediately leads us to a state-discrimination analogue of Davies Theorem [1]. In the course of this, a complete solution for distinguishing equally likely pure qubit states is presented.

Item type:	Article
ID code:	6206
Keywords:	nonorthogonal quantum states, quantum states, qubit, Davies Theorem, qubit states, optimal discrimination, Physics, Physics and Astronomy(all)
Subjects:	Science > Physics
Department:	Faculty of Science > Physics
Depositing user:	Miss Darcy Spiller
Date deposited:	02 Jun 2008
Last modified:	07 Jan 2019 23:58
URI:	https://strathprints.strath.ac.uk/id/eprint/6206
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