Information Geometric Security Analysis of Differential Phase Shift Quantum Key Distribution Protocol

TL;DR

This paper employs information geometric algorithms to analyze the security bounds of the practical Differential Phase Shift Quantum Key Distribution protocol, enhancing understanding of its security in real-world applications.

Contribution

It introduces efficient computational information geometric methods to evaluate the security of the DPS QKD protocol, addressing open questions about its security bounds.

Findings

Provides a new computational approach for security analysis

Offers insights into the security limits of DPS QKD

Facilitates practical implementation of quantum security protocols

Abstract

This paper analyzes the information-theoretical security of the Differential Phase Shift (DPS) Quantum Key Distribution (QKD) protocol, using efficient computational information geometric algorithms. The DPS QKD protocol was introduced for practical reasons, since the earlier QKD schemes were too complicated to implement in practice. The DPS QKD protocol can be an integrated part of current network security applications, hence it's practical implementation is much easier with the current optical devices and optical networks. The proposed algorithm could be a very valuable tool to answer the still open questions related to the security bounds of the DPS QKD protocol.