Operational criterion for controlled dense coding with non-trivial tripartite entangled states

Sovik Roy, Biplab Ghosh, Md Manirul Ali

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1 Citation (Scopus)

Abstract

In this paper, we provide an operational criterion for controlled dense coding (CDC) with a general class of three-qubit partially entangled states. A general three-qubit pure entangled state can be classified into two inequivalent classes according to their genuine tripartite entanglement. We claim that if a three-qubit state shows entanglement characteristic similar to Greenberger–Horne–Zeilinger (GHZ)-class, then such non-trivial tripartite states are useful in CDC whereas states belonging to the W-class are not useful for that. We start with a particular class of non-trivial partially entangled states belonging to the GHZ-class and show that they are effective in CDC. Then we cite several other examples of different types of tripartite entangled states to support our conjecture.

Original languageEnglish
Article number50
JournalPramana - Journal of Physics
Volume91
Issue number4
DOIs
Publication statusPublished - 2018 Oct 1

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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