A (2, 3) quantum threshold scheme based on Greenberger--Horne--Zeilinger state
Li Yuan(李渊)† and Zeng Gui-Hua(曾贵华)‡
Laboratory of Quantum Information and Communication Security, Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200240, China
Abstract In this paper, by using properties of quantum controlled-not manipulation and entanglement states, we have designed a novel (2, 3) quantum threshold scheme based on the Greenberger- Horne -Zeilinger (GHZ) state. The proposed scheme involves two phases, i.e. a secret sharing phase and a secret phase. Detailed proofs show that the proposed scheme is of unconditional security. Since the secret is shared among three participants, the proposed scheme may be applied to quantum key distribution and secret sharing.
Received: 22 November 2006
Revised: 01 March 2007
Accepted manuscript online:
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