Advancing On-Chip Continuous-Variable Quantum Key Distribution Solutions

E. Llanos; S. Sarmiento; J. Tabares; E. Bazzani; J. A. Lazaro; Tapani Vehmas; Yisbel Marin Vasquez; George Thomas; Henrik Forsten; Ben Walchli; Sara Pourjamal; M. Kresse; Y. Durvasa Gupta; M. Kleinert; N. Keil; S. Etcheverry

doi:10.1109/ICTON67126.2025.11125412

Advancing On-Chip Continuous-Variable Quantum Key Distribution Solutions

E. Llanos
, S. Sarmiento^*
, J. Tabares
, E. Bazzani
, J. A. Lazaro
, Tapani Vehmas
, Yisbel Marin Vasquez
, George Thomas
, Henrik Forsten
, Ben Walchli
, Sara Pourjamal
, M. Kresse
, Y. Durvasa Gupta
, M. Kleinert
, N. Keil
, S. Etcheverry

^*Corresponding author for this work

LuxQuanta Technologies S.L.
Polytechnic University of Catalonia (UPC)
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

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.

Original language	English
Title of host publication	2025 25th Anniversary International Conference on Transparent Optical Networks (ICTON)
Editors	Crina Cojocaru, Salvatore Spadaro, Marian Marciniak
Publisher	IEEE Institute of Electrical and Electronic Engineers
ISBN (Electronic)	979-8-3315-9777-1
ISBN (Print)	979-8-3315-9778-8
DOIs	https://doi.org/10.1109/ICTON67126.2025.11125412
Publication status	Published - 2025
MoE publication type	A4 Article in a conference publication
Event	25th Anniversary International Conference on Transparent Optical Networks, ICTON 2025 - Barcelona, Spain Duration: 6 Jul 2025 → 10 Jul 2025

Conference

Conference	25th Anniversary International Conference on Transparent Optical Networks, ICTON 2025
Country/Territory	Spain
City	Barcelona
Period	6/07/25 → 10/07/25

Funding

This work was supported by the Qu-Pilot project, funded by the European Union's Horizon Europe research and innovation programme under Grant Agreement number 101079926.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Continuous-variable quantum key distribution
photonic integrated circuits

Access to Document

10.1109/ICTON67126.2025.11125412

Cite this

Llanos, E., Sarmiento, S., Tabares, J., Bazzani, E., Lazaro, J. A., Vehmas, T., Vasquez, Y. M., Thomas, G., Forsten, H., Walchli, B., Pourjamal, S., Kresse, M., Gupta, Y. D., Kleinert, M., Keil, N., & Etcheverry, S. (2025). Advancing On-Chip Continuous-Variable Quantum Key Distribution Solutions. In C. Cojocaru, S. Spadaro, & M. Marciniak (Eds.), 2025 25th Anniversary International Conference on Transparent Optical Networks (ICTON) IEEE Institute of Electrical and Electronic Engineers. https://doi.org/10.1109/ICTON67126.2025.11125412

@inproceedings{effb6df64209461d87084bc69f3c1522,

title = "Advancing On-Chip Continuous-Variable Quantum Key Distribution Solutions",

abstract = "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.",

keywords = "Continuous-variable quantum key distribution, photonic integrated circuits",

author = "E. Llanos and S. Sarmiento and J. Tabares and E. Bazzani and Lazaro, \{J. A.\} and Tapani Vehmas and Vasquez, \{Yisbel Marin\} and George Thomas and Henrik Forsten and Ben Walchli and Sara Pourjamal and M. Kresse and Gupta, \{Y. Durvasa\} and M. Kleinert and N. Keil and S. Etcheverry",

year = "2025",

doi = "10.1109/ICTON67126.2025.11125412",

language = "English",

isbn = "979-8-3315-9778-8",

editor = "Crina Cojocaru and Salvatore Spadaro and Marian Marciniak",

booktitle = "2025 25th Anniversary International Conference on Transparent Optical Networks (ICTON)",

publisher = "IEEE Institute of Electrical and Electronic Engineers",

address = "United States",

note = "25th Anniversary International Conference on Transparent Optical Networks, ICTON 2025 ; Conference date: 06-07-2025 Through 10-07-2025",

}

Llanos, E, Sarmiento, S, Tabares, J, Bazzani, E, Lazaro, JA, Vehmas, T, Vasquez, YM, Thomas, G, Forsten, H, Walchli, B , Pourjamal, S, Kresse, M, Gupta, YD, Kleinert, M, Keil, N & Etcheverry, S 2025, Advancing On-Chip Continuous-Variable Quantum Key Distribution Solutions. in C Cojocaru, S Spadaro & M Marciniak (eds), 2025 25th Anniversary International Conference on Transparent Optical Networks (ICTON). IEEE Institute of Electrical and Electronic Engineers, 25th Anniversary International Conference on Transparent Optical Networks, ICTON 2025, Barcelona, Spain, 6/07/25. https://doi.org/10.1109/ICTON67126.2025.11125412

Advancing On-Chip Continuous-Variable Quantum Key Distribution Solutions. / Llanos, E.; Sarmiento, S.; Tabares, J. et al.
2025 25th Anniversary International Conference on Transparent Optical Networks (ICTON). ed. / Crina Cojocaru; Salvatore Spadaro; Marian Marciniak. IEEE Institute of Electrical and Electronic Engineers, 2025.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Advancing On-Chip Continuous-Variable Quantum Key Distribution Solutions

AU - Llanos, E.

AU - Sarmiento, S.

AU - Tabares, J.

AU - Bazzani, E.

AU - Lazaro, J. A.

AU - Vehmas, Tapani

AU - Vasquez, Yisbel Marin

AU - Thomas, George

AU - Forsten, Henrik

AU - Walchli, Ben

AU - Pourjamal, Sara

AU - Kresse, M.

AU - Gupta, Y. Durvasa

AU - Kleinert, M.

AU - Keil, N.

AU - Etcheverry, S.

PY - 2025

Y1 - 2025

N2 - 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.

AB - 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.

KW - Continuous-variable quantum key distribution

KW - photonic integrated circuits

UR - https://www.scopus.com/pages/publications/105016132026

U2 - 10.1109/ICTON67126.2025.11125412

DO - 10.1109/ICTON67126.2025.11125412

M3 - Conference article in proceedings

AN - SCOPUS:105016132026

SN - 979-8-3315-9778-8

BT - 2025 25th Anniversary International Conference on Transparent Optical Networks (ICTON)

A2 - Cojocaru, Crina

A2 - Spadaro, Salvatore

A2 - Marciniak, Marian

PB - IEEE Institute of Electrical and Electronic Engineers

T2 - 25th Anniversary International Conference on Transparent Optical Networks, ICTON 2025

Y2 - 6 July 2025 through 10 July 2025

ER -

Llanos E, Sarmiento S, Tabares J, Bazzani E, Lazaro JA, Vehmas T et al. Advancing On-Chip Continuous-Variable Quantum Key Distribution Solutions. In Cojocaru C, Spadaro S, Marciniak M, editors, 2025 25th Anniversary International Conference on Transparent Optical Networks (ICTON). IEEE Institute of Electrical and Electronic Engineers. 2025 doi: 10.1109/ICTON67126.2025.11125412

Advancing On-Chip Continuous-Variable Quantum Key Distribution Solutions

Abstract

Conference

Funding

UN SDGs

Keywords

Access to Document

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