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12 November 2020: One event

séminaire

  • Local speakers

    Thursday 12 November 11:00-12:00 - Dorian Bouchet

    [INTERNE] Illuminating complex systems with light states made to measure

    Résumé : The use of coherent light for precision measurements has driven important progress in research fields from biomedical optics to semiconductor manufacturing. However, performing precise estimations of a given observable can be challenging due to the complex scattering processes typically encountered in realistic systems. In this talk, we introduce a general method to generate states of light optimized for parameter estimation, which are identified by maximizing the Fisher information available to the observer. We experimentally demonstrate that the method can be applied to precisely estimate the phase shift induced by an object that is hidden behind a disordered medium, with only a small number of photons interacting with the sample. Finally, we also discuss the possibility to extend these results, e.g. to minimize the rate of errors made by a classification algorithm.

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