Comprehensive Analysis of BB84, A Quantum Key Distribution Protocol

TL;DR

This paper provides a comprehensive overview of the BB84 quantum key distribution protocol, highlighting its security features, improvements, and practical implementations in secure communication.

Contribution

It offers a detailed comparative analysis of BB84 and other QKD schemes, emphasizing recent advancements like decoy states and error correction techniques.

Findings

BB84 is a highly secure and extensively studied QKD protocol.

Improvements such as decoy states enhance security and practicality.

The protocol has been successfully implemented in various real-world settings.

Abstract

Quantum Key Distribution (QKD) is a technique that enables secure communication between two parties by sharing a secret key. One of the most well-known QKD protocols is the BB84 protocol, proposed by Charles Bennett and Gilles Brassard in 1984. In this protocol, Alice and Bob use a quantum channel to exchange qubits, allowing them to generate a shared key that is resistant to eavesdropping. This paper presents a comparative study of existing QKD schemes, including the BB84 protocol, and highlights the advancements made in the BB84 protocol over the years. The study aims to provide a comprehensive overview of the different QKD schemes and their strengths and weaknesses and demonstrate QKDs working principles through existing simulations and implementations. Through this study, we show that the BB84 protocol is a highly secure QKD scheme that has been extensively studied and implemented in various settings. Furthermore, we discuss the improvements made to the BB84 protocol to enhance its security and practicality, including the use of decoy states and advanced error correction techniques. Overall, this paper provides a comprehensive analysis of QKD schemes, focusing on the BB84 protocol in secure communication technologies.