Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

OSA Advanced Photonics Congress

High-Rate CV-QKD Systems Leveraged by Advanced Coherent Detection Technology

Amirhossein Ghazisaeidi

Published Jan 1, 2024• 0 citations
Publisher

Abstract

We review basic concepts of continuous-variable quantum key distribution, and report on some recent demonstrations of high secret key rate systems based on advanced modulation formats and coherent detection. Full-text article not available; see video presentation
DOI
10.1364/networks.2024.nem1c.3

Related papers

Recent Progress in Security Theory of Quantum Key Distribution

Masato Koashi

Continuous-variable QKD with homodyne detection has many practical merits compared to QKD with photon detection, but proving its full security is harder. This talk will introduce recent proof techniques to improve its applicability and performance. Full-text article not available; see video presentation

OSA Advanced Photonics Congress•Jan 1, 2025•0 citations

Recent Progress in Practical Quantum Key Distribution

Davide Bacco

In this tutorial I will discuss recent progress on quantum key distribution systems, from advanced modulation formats, to photonic integrated circuits. Additionally, I will showcase recent implementations of practical use cases within the European context. Full-text article not available; see video presentation

Optical Fiber Communication Conference•Jan 1, 2025•0 citations

An introductory review of the theory of continuous-variable quantum key distribution: Fundamentals, protocols, and security

Maron F Anka, John A. Mora Rodríguez, Douglas F. Pinto +3 more

Continuous-variable quantum key distribution (CV-QKD) has emerged as a promising approach for secure quantum communication, offering advantages such as high key generation rates, compatibility with standard telecommunication infrastructure, and potential for integration on photonic chips. This review provides an accessible introduction to the theory of CV-QKD, aimed at researchers entering this rapidly developing field. We focus on fundamental concepts, key protocols, and security analysis essential for understanding CV-QKD systems, with a special emphasis on prepare-and-measure protocols using coherent states under asymptotic security conditions. We explain their equivalence to entanglement-based protocols and detail the security proof framework against collective attacks, encompassing both Gaussian and discrete modulation schemes. We also briefly address more advanced topics, including measurement-device-independent CV-QKD and finite-size security analysis. This work is motivated by Brazil's growing investment in quantum communication technologies. By presenting a clear learning path from basic concepts to advanced topics, this work aims to equip newcomers with the essential tools to engage with current research in CV-QKD, thereby supporting the training of a new generation of researchers in this strategic field.

quant-pharXiv:2512.01758•Brazilian Journal of Physics•Dec 2, 2025•4 citations

Introduction to Continuous Variable Quantum Key Distribution

Takuya Hirano

In this talk, we will review the present status of continuous-variable quantum key distribution, including optical configuration and security analysis, and would like to discuss future prospects for integration with coherent optical communications.

Optical Fiber Communication Conference•Jan 1, 2022•1 citation

Advancing On-Chip Continuous-Variable Quantum Key Distribution Solutions

E. Llanos, Samael Sarmiento, Jeison Tabares +13 more

Quantum key distribution (QKD) enables secure secret key exchange with information-theoretic security by leveraging the principles of quantum mechanics. Continuous-variable QKD (CV-QKD), which utilizes coherent states and coherent detection, has gained attention as a promising approach due to its seamless integration with existing telecommunications networks. CV-QKD systems, which are built with standard telecommunication components, open the door—through photonic integration technology—to the development of devices that are more affordable, compact, and energy efficient. This paper reviews the current state of the art and highlights our recent progress toward fully integrated CV-QKD systems.

International Conference on Transparent Optical Networks•Jul 6, 2025•0 citations

High-rate discretely-modulated continuous-variable quantum key distribution using quantum machine learning

Qin Liao, Zhuoying Fei, Jieyu Liu +3 more

arXiv:2308.03283•Chaos Solitons & Fractals•Apr 1, 2025•14 citations
Continuous-variable quantum key distribution (CV-QKD) has emerged as a promising approach for secure quantum communication, offering advantages such as high key generation rates, compatibility with standard telecommunication infrastructure, and potential for integration on photonic chips. This review provides an accessible introduction to the theory of CV-QKD, aimed at researchers entering this rapidly developing field. We focus on fundamental concepts, key protocols, and security analysis essential for understanding CV-QKD systems, with a special emphasis on prepare-and-measure protocols using coherent states under asymptotic security conditions. We explain their equivalence to entanglement-based protocols and detail the security proof framework against collective attacks, encompassing both Gaussian and discrete modulation schemes. We also briefly address more advanced topics, including measurement-device-independent CV-QKD and finite-size security analysis. This work is motivated by Brazil's growing investment in quantum communication technologies. By presenting a clear learning path from basic concepts to advanced topics, this work aims to equip newcomers with the essential tools to engage with current research in CV-QKD, thereby supporting the training of a new generation of researchers in this strategic field.
Quantum key distribution (QKD) enables secure secret key exchange with information-theoretic security by leveraging the principles of quantum mechanics. Continuous-variable QKD (CV-QKD), which utilizes coherent states and coherent detection, has gained attention as a promising approach due to its seamless integration with existing telecommunications networks. CV-QKD systems, which are built with standard telecommunication components, open the door—through photonic integration technology—to the development of devices that are more affordable, compact, and energy efficient. This paper reviews the current state of the art and highlights our recent progress toward fully integrated CV-QKD systems.