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Results in optimal discrimination

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

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    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
    Subjects: Science > Physics
    Department: Unknown Department
    Related URLs:
    Depositing user: Miss Darcy Spiller
    Date Deposited: 02 Jun 2008
    Last modified: 25 Sep 2011 22:57
    URI: http://strathprints.strath.ac.uk/id/eprint/6206

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