Variational Estimation of Optimal Signal States for Quantum Channels

classical communication; Classical-quantum computing; quantum channels; variational algorithms; Channel's capacity; Classical communication; Classical-quantum; Optimal encoding; Quantum channel; Quantum communication systems; Quantum Computing; Variational algorithms; Software; Computer Science (miscellaneous); Condensed Matter Physics; Engineering (miscellaneous); Mechanical Engineering; Computer Science Applications; Electrical and Electronic Engineering

Résumé :

[en] This article explores the performance of quantum communication systems in the presence of noise and focuses on finding the optimal encoding for maximizing the classical communication rate, approaching the classical capacity in some scenarios. Instead of theoretically bounding the ultimate capacity of the channel, we adopt a signal processing perspective to estimate the achievable performance of a physically available but otherwise unknown quantum channel. By employing a variational algorithm to estimate the trace distance between quantum states, we numerically determine the optimal encoding protocol for the amplitude damping and Pauli channels. Our simulations demonstrate the convergence and accuracy of the method with a few iterations, confirming that optimal conditions for binary quantum communication systems can be variationally determined with minimal computation. Furthermore, since the channel knowledge is not required at the transmitter or at the receiver, these results can be employed in arbitrary quantum communication systems, including satellite-based communication systems, a particularly relevant platform for the quantum Internet.

Disciplines :

Ingénierie électrique & électronique

Auteur, co-auteur :

OLEYNIK, Leonardo ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom

Rehman, Junaid Ur ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom

AL-HRAISHAWI, Hayder

CHATZINOTAS, Symeon ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom

Co-auteurs externes :

yes

Langue du document :

Anglais

Titre :

Variational Estimation of Optimal Signal States for Quantum Channels

Date de publication/diffusion :

25 avril 2025

Titre du périodique :

IEEE Transactions on Quantum Engineering

eISSN :

2689-1808

Maison d'édition :

Institute of Electrical and Electronics Engineers Inc.

Volume/Tome :

Pagination :

1 - 8

Peer reviewed :

Peer reviewed vérifié par ORBi

URL complémentaire :

http://xplorestaging.ieee.org/ielx7/8924785/10379182/10508490.pdf?arnumber=10508490

Disponible sur ORBilu :

depuis le 03 novembre 2024

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