Physics – Quantum Physics
Scientific paper
1998-06-18
Physics
Quantum Physics
6 pages, revtex, revised version, to appear in Phys. Rev. A
Scientific paper
10.1103/PhysRevA.59.1829
Secret sharing is a procedure for splitting a message into several parts so that no subset of parts is sufficient to read the message, but the entire set is. We show how this procedure can be implemented using GHZ states. In the quantum case the presence of an eavesdropper will introduce errors so that his presence can be detected. We also show how GHZ states can be used to split quantum information into two parts so that both parts are necessary to reconstruct the original qubit.
Berthiaume Andre
Buzek Vladimir
Hillery Mark
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