Semi-quantum secret sharing using entangled states

Details Semi-quantum secret sharing using entangled states Semi-quantum secret sharing using entangled states

2009-06-10

arxiv.org/abs/0906.1866v3

Physics

Quantum Physics

6 pages, 1 figure, some changes

Scientific paper

Secret sharing is a procedure for sharing a secret among a number of participants such that only the qualified subsets of participants have the ability to reconstruct the secret. Even in the presence of eavesdropping, secret sharing can be achieved when all the members are quantum. So what happens if not all the members are quantum? In this paper we propose two semi-quantum secret sharing protocols using maximally entangled GHZ-type states in which quantum Alice shares a secret with two classical parties, Bob and Charlie, in a way that both parties are sufficient to obtain the secret, but one of them cannot. The presented protocols are also showed to be secure against eavesdropping.

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