Increasing the security of the ping-pong protocol by using many mutually unbiased bases

TL;DR

This paper enhances the ping-pong quantum communication protocol's security by integrating multiple mutually unbiased bases, improving eavesdropping detection and providing bounds on attack detection probabilities.

Contribution

It introduces an extended protocol using multiple mutually unbiased bases and analyzes its security improvements over the original version.

Findings

Increased number of bases improves security.

Derived upper bounds on eavesdropping detection probability.

Proposed a control mode modification to enhance attack detection.

Abstract

In this paper we propose an extended version of the ping-pong protocol and study its security. The proposed protocol incorporates the usage of mutually unbiased bases in the control mode. We show that, by increasing the number of bases, it is possible to improve the security of this protocol. We also provide the upper bounds on eavesdropping average non-detection probability and propose a control mode modification that increases the attack detection probability.