Browsing OSU - Faculty and Staff Publications by Author "Dasgupta, Shubhrangshu"

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    • Implementing Deutsch-Jozsa algorithm using light shifts and atomic ensembles 

      Dasgupta, Shubhrangshu; Biswas, Asoka; Agarwal, G. S. (American Physical Society, 2005-01-27)
      We present an optical scheme to implement the Deutsch-Jozsa algorithm using ac Stark shifts. The scheme uses an atomic ensemble consisting of four-level atoms interacting dispersively with a field. This leads to a Hamiltonian ...

    • Superluminal propagation via coherent manipulation of the Raman gain process 

      Agarwal, G. S.; Dasgupta, Shubhrangshu (American Physical Society, 2004-08-12)
      We present a method of manipulating the Raman process by using a coherent control field which leads to splitting of the Raman gain peak into a doublet and anomalous dispersion in the region between the gain peaks. We show ...