Experimental demonstration of optimal unambiguous state discrimination

Clarke, Roger B. M. and Chefles, Anthony and Barnett, Stephen M. and Riis, Erling (2001) Experimental demonstration of optimal unambiguous state discrimination. Physical Review A, 63 (4). 040305. ISSN 1050-2947 (https://doi.org/10.1103/PhysRevA.63.040305)

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Abstract

We present a full demonstration of unambiguous state discrimination between nonorthogonal quantum states. Using a free-space interferometer we have realized the optimum quantum measurement scheme for two nonorthogonal states of light, known as the Ivanovic-Dieks-Peres (IDP) measurement. We have gained access to all three possible outcomes of this measurement. All aspects of this generalized measurement scheme, including its superiority over a standard von Neumann measurement, have been demonstrated within 1.5% of the IDP predictions.

  • Item type:Article
    ID code:2972
    Dates:
    Date
    Event
    21 March 2001
    Published
    Subjects:Science > Physics > Optics. Light
    Department:Faculty of Science > Physics
    Depositing user: Mr Derek Boyle
    Date deposited:28 Feb 2007
    Last modified:17 Apr 2024 00:12
    URI:https://strathprints.strath.ac.uk/id/eprint/2972
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