Quantum Information splitting using a pair of GHZ states
This work addresses quantum communication protocols for secure information sharing, but it is incremental as it focuses on restricted classes of states and specific configurations.
The authors tackled the problem of quantum information splitting (QIS) for specific three-qubit states among three parties, using a pair of GHZ states as the quantum channel, and explicitly constructed the channel, measurement basis, and unitary operations required for the receiver.
We describe a protocol for quantum information splitting (QIS) of a restricted class of three-qubit states among three parties Alice, Bob and Charlie, using a pair of GHZ states as the quantum channel. There are two different forms of this three-qubit state that is used for QIS depending on the distribution of the particles among the three parties. There is also a special type of four-qubit state that can be used for QIS using the above channel. We explicitly construct the quantum channel, Alice's measurement basis and the analytic form of the unitary operations required by the receiver for such a purpose.