Quantum Key Distribution Based on Systematic Polar Coding

TL;DR

This paper introduces a novel quantum key distribution method utilizing systematic polar coding, achieving higher key rates than traditional BB84 protocols in finite-size and low-error quantum channels.

Contribution

It combines quantum key distribution with systematic polar coding, resulting in improved key rates and efficiency over existing protocols.

Findings

Higher key rates than BB84 and eBB84 in finite-size regimes

Enhanced efficiency in low-error quantum channels

Demonstrates the effectiveness of systematic polar coding in quantum cryptography

Abstract

Here we concerned with quantum key distribution - a way to establish common cryptographic key between several parties. The work proposes a combination between quantum key distribution and systematic polar coding (an error correction algorithm) frameworks - quantum key distribution based on systematic polar coding. This results in obtaining key rates greater than standard quantum key distribution (BB84) and its efficient version (eBB84) when finite-size regime and lower-error-rate quantum channel are considered.