Experimental Deployment of a 4-State Continuous-Variable QKD System with Rate-Adaptive Error Correction in an Urban Environment

Richter S, Eisemann L, Vural H, Bayraktar Ö, Jaksch K, Khan I, Eichhammer E, Marquardt C, Sollner E (2025)

Publication Type: Conference contribution

Publication year: 2025

Publisher: IEEE

City/Town: New York City

Pages Range: 1-1

Conference Proceedings Title: 2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)

DOI: 10.1109/CLEO/Europe-EQEC65582.2025.11110834

Abstract

In realistic environments, continuous-variable QKD has to contend with changing channel parameters. Rate-adaptive error correction (RA-EC) can avoid the key rate losses due to deviations from the optimal working point of any given fixed-rate code. The benefits of rate-adaptivity have only recently been demonstrated for CV-QKD with a QPSK protocol [1]. In this work, we explicitly compare the key rate performance of a 4-state CV-QKD system deployed in an urban environment by using both fixed-rate and rate-adaptive implementations.

Authors with CRIS profile

Stefan Richter Chair of Optical Quantum Technologies Lukas Eisemann Chair of Optical Quantum Technologies Hüseyin Vural Chair of Optical Quantum Technologies Ömer Bayraktar Lehrstuhl für Experimentalphysik Kevin Jaksch Chair of Optical Quantum Technologies Christoph Marquardt Chair of Optical Quantum Technologies

Involved external institutions

Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light DE Germany (DE)

How to cite

APA:

Richter, S., Eisemann, L., Vural, H., Bayraktar, Ö., Jaksch, K., Khan, I.,... Sollner, E. (2025). Experimental Deployment of a 4-State Continuous-Variable QKD System with Rate-Adaptive Error Correction in an Urban Environment. In 2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) (pp. 1-1). New York City: IEEE.

MLA:

Richter, Stefan, et al. "Experimental Deployment of a 4-State Continuous-Variable QKD System with Rate-Adaptive Error Correction in an Urban Environment." Proceedings of the 2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) New York City: IEEE, 2025. 1-1.

BibTeX: Download