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

References in corpus (5)

• A Two-Step Quantum Direct Communication Protocol Using Einstein-Podolsky-Rosen Pair Block
• Secure Deterministic Communication Without Entanglement
• Three-party quantum secure direct communication based on Greenberger-Horne-Zeilinger states
• Generation and control of Greenberger-Horne-Zeilinger entanglement in superconducting circuits
• Multiparty controlled quantum secret direct communication using Greenberger-Horne-Zeilinger state

Cited by in corpus (2)

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