Unconditional Security of a $K$-State Quantum Key Distribution Protocol

TL;DR

This paper introduces a new family of quantum key distribution protocols, analyzes their security based on entanglement distillation and CSS codes, and compares their performance with established protocols like BB84 and R04.

Contribution

The paper presents a novel family of quantum key distribution protocols with proven unconditional security, expanding the options for secure quantum communication.

Findings

The new protocols achieve comparable or improved key generation rates.

Security is rigorously analyzed using entanglement distillation and CSS codes.

The protocols are shown to be unconditionally secure against eavesdropping.

Abstract

Quantum key distribution protocols constitute an important part of quantum cryptography, where the security of sensitive information arises from the laws of physics. In this paper we introduce a new family of key distribution protocols and we compare its key with the well-known protocols such as BB84, PBC0 and generation rate to the well-known protocols such as BB84, PBC0 and R04. We also state the security analysis of these protocols based on the entanglement distillation and CSS codes techniques.