• Two-way quantum communication: Generalization of secure quantum information exchange to quantum network

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/086/03/0515-0526

    • Keywords

       

      Quantum information; quantum teleportation; two-way quantum communication; coherent state; QED.

    • Abstract

       

      The idea of secure quantum information exchange (SQIE) [{\it J. Phys. B: At. Mol. Opt. Phys.} 44, 115504 (2011)] is introduced for the secure exchange of single qubit information states between two legitimate users, Alice and Bob. In the present paper, we extend this original SQIE protocol by presenting a scheme, which enables the secure exchange of n-single qubit information states among the n nodes of a quantum network, with the aid of a special kind of 4$n$-qubit entangled state and the classical assistance of an extra participant Charlie. For experimental realization of our extended SQIE protocol, we suggest an efficient scheme for the generation of a special kind of 4n-qubit entangled state using the interaction between highly detuned $\Lambda$-type three-level atoms and optical coherent field. Further, by discussing the various experimental parameters, we show that the special kind 4$n$-qubit entangled state can be generated with the presently available technology.

    • Author Affiliations

       

      Maurya Ajay K1 Mishra Manoj K1 Prakash Hari1 2

      1. Physics Department, University of Allahabad, Allahabad 211 002, India
      2. Physics Department, Indian Institute of Information Technology, Allahabad 211 002, 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

© 2017-2019 Indian Academy of Sciences, Bengaluru.