Emulation of the Six-State Quantum Key Distribution Protocol with Pulsed Lasers

TL;DR

This paper presents a practical, accessible framework for emulating the six-state quantum key distribution protocol using pulsed lasers, combining optical experiments with computational analysis to illustrate multi-basis encoding principles.

Contribution

It introduces a cost-effective, tabletop emulation platform for exploring the six-state QKD protocol, bridging experimental and theoretical aspects.

Findings

Demonstrates fundamental principles of multi-basis encoding

Connects experimental measurements with theoretical expectations

Provides a robust platform for testing quantum communication protocols

Abstract

Quantum cryptography remains a topic of enduring scientific and educational interest. Here, we present a clear and accessible framework for exploring the six-state quantum key distribution protocol, an enhanced three-basis extension of the BB84 scheme that combines optical experiments with computational analysis. Designed for testing quantum communication protocols through emulation, this approach provides a robust and cost-effective platform that highlights the fundamental principles of multi-basis encoding and demonstrates how experimental measurements connect directly to theoretical expectations in a controlled tabletop setting.