A quantum key distribution protocol without classical communications

TL;DR

This paper introduces a quantum key distribution protocol utilizing GHZ state correlations that eliminates the need for classical communication, enhancing security in scenarios lacking unjammable classical channels.

Contribution

The paper presents a novel quantum key distribution protocol based solely on quantum correlations, removing classical communication requirements.

Findings

Protocol is secure against eavesdropping.

No classical communication needed during key establishment.

Suitable for environments without unjammable classical channels.

Abstract

We provide a quantum key distribution protocol based on the correlations of the Greenburger-Horne-Zeilinger(GHZ) state. No classical communication is needed in the process of the establishment of the key. Our protocol is useful when an unjammable classical communication channel is unavailable. We prove that the protocol is secure.