• S K Srinivasan

      Articles written in Pramana – Journal of Physics

    • Dead time corrections to photocounts and clipped correlations of Gaussian light

      S K Srinivasan

      More Details Abstract Fulltext PDF

      A general method of dealing with the photocount distribution is proposed when dead time effects are to be taken into account. The clipped correlations of photocounts are investigated in detail and pointwise bounds for the correlation functions are explicitly provided when the dead times are not necessarily small compared to the sample time.

    • An age-dependent model of cavity radiation and its detection

      S K Srinivasan

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      Cavity radiation is modelled as a population point process with age-dependent birth rate. A method of phases is introduced to analyze special types of age dependencies. The conditional life-time of the cavity photon is assumed to be in hypothetical phases, the life-span of the phases being distributed independently and exponentially. The analysis leads to an explicit differential equation for the generating function of the population size. The detection process is analyzed and an explicit expression for the correlation of the counts provided. By an appropriate choice of the parameters, the spectrum corresponding to Gaussian Lorentzian light is recovered.

    • An age-dependent model of cavity radiation and its detection II. Anti-bunched and thermal characteristics

      S K Srinivasan

      More Details Abstract Fulltext PDF

      The model of cavity radiation introduced earlier is analysed further by considering special types of age-specific population growth interpretable in terms of evolution through phases. The model is shown to be versatile enough to admit anti-bunched photon statistics provided the process of spontaneous emission is appropriately modelled. A four-phase model is analysed and the resulting radiation is shown to correspond to the one obtained by the superposition of two independent thermal streams each with a Lorentzian spectrum.

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