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

  title={Operational criterion for controlled dense coding with non-trivial tripartite entangled states},
  author={Sovik Roy and Biplab Ghosh and Md. Manirul Ali},
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… Expand
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