• M D Srinivas

      Articles written in Pramana – Journal of Physics

    • Optimal entropic uncertainty relation for successive measurements in quantum information theory

      M D Srinivas

      More Details Abstract Fulltext PDF

      We derive an optimal bound on the sum of entropic uncertainties of two or more observables when they are sequentially measured on the same ensemble of systems. This optimal bound is shown to be greater than or equal to the bounds derived in the literature on the sum of entropie uncertainties of two observables which are measured on distinct but identically prepared ensembles of systems. In the case of a two-dimensional Hilbert space, the optimum bound for successive measurements of two-spin components, is seen to be strictly greater than the optimal bound for the case when they are measured on distinct ensembles, except when the spin components are mutually parallel or perpendicular

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