• Detecting identical entanglement pure states for two qubits

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      https://www.ias.ac.in/article/fulltext/pram/091/04/0045

    • Keywords

       

      Identical entanglement; detection; randomness distillation

    • Abstract

       

      Entanglement is one of the most surprising features of composite quantum systems. Yet, challenges remain in our understanding and quantification of the entanglement. There is no unique degree of entanglement from various measures, as presented by numerous studies on quantifying entanglement. As indicated in this paper, any degree of entanglement for two qubits resulting from a particular measure can be detected in excess of onecorresponding pure state. Evidently, those identical entanglement pure states can be counted as a quantitative condition to be satisfied by other proper measures. The most popular measures of pure states for two qubits are based on the same structure, as indicated in this paper. Then, the algorithm to detect the identical entanglement pure states for two qubits is proposed based on randomness distillation. Eventually, two sets of identical entanglement states are listed for two qubits.

    • Author Affiliations

       

      WEI DENG1 YONG DENG1

      1. School of Computer and Information Science, Southwest University, Chongqing 400715, People’s Republic of China
    • Dates

       
  • Pramana – Journal of Physics | News

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