Secret Broadcasting of GHZ type state

TL;DR

This paper presents a protocol for secretly broadcasting GHZ-type entangled states using a cloning machine and measurements, along with a comparative analysis of residual entanglement.

Contribution

It introduces a novel secret broadcasting protocol for GHZ states and analyzes the residual tangle post-measurement, advancing quantum communication methods.

Findings

Successful secret broadcasting of GHZ states demonstrated.

Residual tangle varies depending on the measurement outcomes.

Protocol enhances secure quantum communication techniques.

Abstract

Here we described a protocol by which one can broadcast GHZ-type states secretly. We have done this with the help of a cloning machine followed by subsequent measurements. We also made a comparative study of the amount of residual tangle present in these entangled states, obtained as outputs of the measurements.