Quantum key distribution based on Greenberger-Horne-Zeilinger state

Details Quantum key distribution based on Greenberger-Horne-Zeilinger state Quantum key distribution based on Greenberger-Horne-Zeilinger state

2000-01-13

arxiv.org/abs/quant-ph/0001044v1

Physics

Quantum Physics

10 pages, no figures

Scientific paper

An unsymmetrical quantum key distribution scheme is proposed, its security is guaranteed by the correlation of the Greenberger-Horne-Zeilinger triplet state. In the proposed protocol, the distribution of quantum states are unsymmetrical. This unsymmetrical characteristic makes the transmission qubits (except the loss qubits) be useful. Sequentially the proposed protocol has excellent efficiency and security which are very useful in the practical application.

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