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      https://www.ias.ac.in/article/fulltext/pram/086/05/1009-1019

    • Keywords

       

      Quantum state merging; W state; non-maximally entangled state; cavity QED.

    • Abstract

       

      We present two schemes for transforming bipartite non-maximally entangled states into a W state in cavity QED system, by using highly detuned interactions and the resonant interactions between two-level atoms and a single-mode cavity field. A tri-atom W state can be generated by adjusting the interaction times between atoms and the cavity mode. These schemes demonstrate that two bipartite non-maximally entangled states can be merged into a maximally entangled W state. So the scheme can, in some sense, be regarded as an entanglement concentration process. The experimental feasibility of the schemes is also discussed.

    • Author Affiliations

       

      ZANG XUE-PING1 2 YANG MING1 DU CHAO-QUN1 WANG MIN1 FANG SHU-DONG2 CAO ZHUO-LIANG3

      1. Key Laboratory of Opto-electronic Information Acquisition and Manipulation, Ministry of Education, School of Physics & Material Science, Anhui University, Hefei 230601, People’s Republic of China
      2. Department of Mechanical and Electronic Engineering, Chizhou University, Chizhou, Anhui 247000, People’s Republic of China
      3. Department of Physics & Electronic Engineering, Hefei Normal University, Hefei 230061, People’s Republic of China
    • Dates

       
  • Pramana – Journal of Physics | News

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