Quantum key distribution protocol based on contextuality monogamy

TL;DR

This paper introduces a novel quantum key distribution protocol leveraging quantum contextuality and monogamy, offering a new framework with potential security and practical benefits.

Contribution

It presents a new QKD protocol based on the KCBS inequality and contextuality monogamy, expanding the conceptual and practical landscape of quantum cryptography.

Findings

Calculated key and error rates under eavesdropping scenarios

Demonstrated security dependence on contextuality monogamy

Showed advantages over existing protocols

Abstract

The security of quantum key distribution protocols hinges upon features of physical systems that are uniquely quantum in nature. We explore the role of quantumness as qualified by quantum contextuality, in quantum key distribution schemes. We present a new quantum key distribution protocol whose security depends uponthe KCBS inequality and contextuality monogamy. We explicitly calculate the key rate, error rate introduced between Alice-Bob communication due to the presence of Eve, and the information-gain by Eve. This protocol provides a new framework for quantum key distribution which has conceptual and practical advantages over other quantum protocols.