Quantum key distribution in terms of the Greenberger-Horne-Zeilinger state: multi-key generation

Abstract

In this paper, we develop a quantum key distribution protocol based on the Greenberger-Horne-Zeilinger states (GHZs). The particles are exchanged among the users in blocks through two steps. In this protocol, for three-particle GHZs three keys can be simultaneously generated. The advantage of this is that the users can select the most suitable key for communication. The protocol can be generalized to $N$ users to provide $N$ keys. The protocol has two levels for checking the eavesdroppers. Moreover, we discuss the security of the protocol against different attacks.

10 Page, no figures. Comments are most welcome

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Cited by in corpus (2)

• Experimental demonstration of counterfactual quantum key distribution
• Effects of depolarizing quantum channels on BB84 and SARG04 quantum cryptography protocols