• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/095/0115

    • Keywords

       

      Direct band-gap semiconductor; quantum phase fluctuations; Pegg–Barnett formalism

    • Abstract

       

      The coherent light interacting with a direct band-gap semiconductor is modelled as two coupled harmonic oscillators with Kerr-type nonlinearity in one of the oscillators. By considering the nonlinearity in the exciton mode, we derive approximate analytical solutions of the coupled differential equations involving two bosonic modes. For both photon and exciton modes which are in initial coherent states, we calculate the phase fluctuation parameters due to Carruthers and Nieto. We have used the Pegg–Barnett formalism for defining the useful phase operators. We report the increase and decrease of phase fluctuation parameters of input radiation field compared to its initial values. Effects of vacuum field on the phase fluctuation parameters are found distinctly different from their counterparts without vacuum. The complete analytical approach of the present investigation is substantiated by the numerical calculations based on QuTip.

    • Author Affiliations

       

      ARJUN MUKHOPADHYAY1 MOHOSIN ALAM1 BISWAJIT SEN2 SWAPAN MANDAL1

      1. Department of Physics, Visva-Bharati, Santiniketan 731 235, India
      2. Department of Physics, Vidyasagar Teacher’s Training College, Midnapore 721 101, India
    • Dates

       
  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.