Asymmetric Quantum Dialogue in Noisy Environment

TL;DR

This paper introduces an asymmetric quantum dialogue protocol that allows different communication capacities for users, utilizing group-theoretic encoding and demonstrating robustness against noise in quantum environments.

Contribution

It presents a novel asymmetric quantum dialogue scheme based on group theory, enabling different information exchange amounts and analyzing its noise resilience.

Findings

The scheme is robust against amplitude and phase damping noise.

It optimizes quantum resource usage for asymmetric communication.

The protocol is adaptable based on the amount of information exchanged.

Abstract

A notion of asymmetric quantum dialogue (AQD) is introduced. Conventional protocols of quantum dialogue are essentially symmetric as both the users (Alice and Bob) can encode the same amount of classical information. In contrast, the scheme for AQD introduced here provides different amount of communication powers to Alice and Bob. The proposed scheme, offers an architecture, where the entangled state and the encoding scheme to be shared between Alice and Bob depends on the amount of classical information they want to exchange with each other. The general structure for the AQD scheme has been obtained using a group theoretic structure of the operators introduced in (Shukla et al., Phys. Lett. A, 377 (2013) 518). The effect of different types of noises (e.g., amplitude damping and phase damping noise) on the proposed scheme is investigated, and it is shown that the proposed AQD is robust and uses optimized amount of quantum resources.